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Hacking the Case Interview

Looking for a case interview cheat sheet or study guide to help you prepare for your upcoming consulting interviews?

Download our Case Interview Cheat Sheet and Study Guide , which covers all of the most important things you need to know. If you are looking to read the case interview cheat sheet in plain text, we’ve included all of the text below.

This case interview cheat sheet covers:  

What is a case interview?

What do case interviews assess?

What is the structure of a case interview?

What are the common types of cases?

What formulas do you need to know for case interviews?

What numbers do you need to know for case interviews?

What are some case interview tips?

If you’re looking for a step-by-step shortcut to learn case interviews quickly, enroll in our case interview course . These insider strategies from a former Bain interviewer helped 30,000+ land consulting offers while saving hundreds of hours of prep time.

A case interview is a 30- to 45-minute exercise that places you in a hypothetical business situation in which you and the interviewer work together to develop a recommendation or answer to a business problem.

• How can Walmart increase its profitability?
• How can Nike increase customer retention?
• How should Apple price its new smartphone?

A case interview assesses five criteria:

1.   Logical, structured thinking : Can you structure complex problems and ideas in a clear and organized way?

2.  Analytical problem solving: Can you analyze and interpret data to draw the right conclusions?

3.  Business acumen : Do you have a strong understanding of business fundamentals and good business judgment?

4.  Communication skills : Can you communicate clearly, concisely, and articulately?

5.  Personality and cultural fit : Are you a good fit for the work culture of the firm you are interviewing with?

All case interviews follow seven major steps:

1.  Understand the case background : Take notes while the interviewer reads you the case information. Pay particularly close attention to the context, company, and objective.

2.  Ask  clarifying questions : If necessary, ask 1 – 3 questions to clarify the objective of the case, understand the company better, or understand an unfamiliar term.

3.  Structure a framework : Structure a framework to break down the complex business problem into simpler, smaller components. A framework is a tool that organizes different ideas into major categories. Present your framework to the interviewer. Make sure that your framework is MECE .

M utually E xclusive: None of the parts of your framework overlap with each other

C ollectively E xhaustive: All of the parts of the framework account for everything you need to know to solve the case with no major areas missing.

4.  Start the case : How the case will start depends on whether the case is an interviewer-led case or a candidate-led case .

Interviewer-led case : The interviewer will be steering and controlling the direction of the case. They will explicitly point you to which questions to answer.

Candidate-led case : You will be driving the direction of the case. You will propose what area of your framework to start in, what questions you want to answer, what analyses you want to do, and what the next step of the case is.

5.  Solve quantitative problems : There are three major types of quantitative problems you could be asked in case interviews.

Market sizing or estimation questions : You will be asked to calculate the size of a particular market or estimate a particular figure. You may need to make your own assumptions on what number to use or the interviewer may provide you with the data.

Profitability or breakeven questions : You will be asked to calculate the expected profitability of a company or investment decision. You could also be asked to calculate the conditions necessary for a company to break even .

Charts and graphs questions : You will be asked to interpret data from various charts or graphs . These can include bar charts, pie charts, line graphs, scatterplots, bubble charts, and waterfall charts.

6.  Answer qualitative questions : There are two major types of qualitative questions you could be asked in case interviews.

Brainstorming questions : You will be asked to brainstorm a list of ideas for a particular problem or question.

Business judgment questions : You will be asked for your opinion on a business issue or a strategic decision.

7. Deliver a recommendation : Present your recommendation and provide the major reasons that support it. Then, propose potential next steps that you would take if you had more time.

Profitability case : A company is experiencing a decline in profits or profitability and is trying to identify what is causing the decline and what they should do about it.

How to solve:  

• Identify the driver behind the decline in profitability, whether it is from a decline in revenue, increase in costs, or both
• Understand what is causing this by looking at customer needs, competitor moves, and market trends
• Identify ways to improve profitability

Growth strategy case : A company is trying to decide how to best grow its business.

• Determine whether the company is looking to grow organically or inorganically
• For organic growth, consider growth through existing revenue sources and new revenue sources
• For inorganic growth, consider potential acquisitions and partnerships

Market entry case : A company is trying to decide whether they should enter a particular new market.

• Determine whether the market is attractive
• Assess the competitive landscape
• Determine if the company has the capabilities to enter
• Estimate the expected profitability from entering

Merger & acquisition case : A company is trying to decide whether or not they should acquire or merge with a particular company.

• Determine whether the company is attractive
• Assess potential synergies and risks
• Estimate the financial implications

New product case : A company is trying to decide whether or not they should develop and launch a particular new product.

How to solve:

• Determine whether the market that the product targets is attractive
• Assess whether the product meets customer needs and is superior to competitor products
• Determine whether the company has the capabilities to successfully develop and launch the product
• Estimate the expected profitability from launching the product

Pricing case : A company is trying to decide the best way to price a particular product or service.

• Determine the cost to produce the product. This is your minimum price.
• Estimate the customer’s maximum willingness to pay by quantifying the value the product provides. This is your maximum price.
• Investigate the price that competitors are setting for similar products. This will help you determine the optimal price between your minimum and maximum price.

Profit Formulas

• Profit = Revenue – Costs
• Revenue = Quantity * Price
• Costs = Total Variable Costs + Total Fixed Costs
• Total Variable Costs = Quantity * Variable Costs
• Profit = (Price – Variable Costs) * Quantity – Total Fixed Costs

Investment Formulas

• Return on Investment = Profit / Investment Cost
• Payback Period = Investment Cost / Profit per Year

Operations Formulas

• Output = Rate * Time
• Utilization = Output / Maximum Output

Market Share Formulas

• Market Share = Company Revenue in the Market / Total Market Revenue
• Relative Market Share = Company Market Share / Largest Competitor’s Market Share

General Statistics

• Global population: 8 billion
• Average household size: 2.5 people per household
• Average life expectancy: 80 years

Country Population Statistics  

• United States: 320 million
• Canada: 40 million
• Mexico: 125 million
• Brazil: 200 million
• United Kingdom: 60 million
• Germany: 80 million
• France: 60 million
• China: 1.4 billion
• India: 1.4 billion
• Russia: 150 million
• Japan: 125 million
• Australia: 25 million

Tip #1 - Make sure you understand the business problem and objective : Answering or addressing the wrong business problem is the quickest way to fail a case interview.

Tip #2 - Don’t rely on using memorized frameworks : Interviewers can tell when you are regurgitating memorized information and not thinking critically.

Tip #3 - Structure your approach before doing any math calculations : This helps you avoid making unnecessary calculations or reaching a dead-end.

Tip #4 - Talk through your calculations out loud : This decreases the likelihood of making a mistake and helps the interviewer follow what you are doing

Tip #5 - Structure your answer to qualitative questions : Use a simple two-part framework such as internal/external, short-term/long-term, or economic/non-economic.

Tip #6 - Answer “so what?” after every question : Throughout the case, connect each of your answers back to the case objective. What implications does your answer have on the overall business problem?

Tip #7 - Have a firm recommendation : Do not have a flimsy recommendation that switches back and forth between two different recommendations. Pick one and provide support.

Tip #8 - Be 80/20 : You will not have time to answer every single question. Focus on the most important questions that have the greatest impact on your answer. This is the 80/20 principle which states that 80% of the outcome comes from 20% of your effort.

Tip #9 - Be coachable and easy to work with : Interviewers look for people that they would personally want to have on their team. Demonstrate that you would be a great teammate.

Tip #10 - Be enthusiastic : Interviewers want to hire candidates that love their job and will work hard. Displaying enthusiasm shows you are passionate about consulting and working at the firm.

Check out our complete list of case interview tips .

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For help landing consulting interviews

• Resume Review & Editing : Transform your resume into one that will get you multiple consulting interviews

For help passing case interviews

• Comprehensive Case Interview Course (our #1 recommendation): The only resource you need. Whether you have no business background, rusty math skills, or are short on time, this step-by-step course will transform you into a top 1% caser that lands multiple consulting offers.
• Case Interview Coaching : Personalized, one-on-one coaching with a former Bain interviewer.
• Hacking the Case Interview Book   (available on Amazon): Perfect for beginners that are short on time. Transform yourself from a stressed-out case interview newbie to a confident intermediate in under a week. Some readers finish this book in a day and can already tackle tough cases.
• The Ultimate Case Interview Workbook (available on Amazon): Perfect for intermediates struggling with frameworks, case math, or generating business insights. No need to find a case partner – these drills, practice problems, and full-length cases can all be done by yourself.

For help passing consulting behavioral & fit interviews

• Behavioral & Fit Interview Course : Be prepared for 98% of behavioral and fit questions in just a few hours. We'll teach you exactly how to draft answers that will impress your interviewer.

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What Is a Case Study?

What is a case study interview, how to prep for a case study interview, case study interview example questions, during the case study interview.

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Table of Contents

A case study interview isn’t your average interview. While most interviews ask you to give examples of how you use your skills on the job, in a case study interview, you’ll use those skills in front of the interviewer to solve a real-life problem.

It’s like auditioning for the school play. But instead of showing you can sing and dance, you’re using a case interview to show how you provide innovative solutions to pressing business problems. Not sure how to get ready for this kind of interview? We’ve got you covered. This guide explains how to prep for a case study interview.

Case studies are used across a variety of industries — everything from business to medicine. They are an in-depth examination, analysis, and critique of a real-world scenario the company experienced. People discuss the situation and explore what they learned while forming new solutions to try when they face a similar situation in the future and hope to improve their performance.

For example, doctors and nurses use case studies to improve how they diagnose and treat patients. Using real patient information, the medical team analyzes the case to see what the team may have missed and why they missed it. Learning from these errors helps the team better prepare for similar cases in the future to improve patient care.

While many industries use case studies to iterate and improve their performance, not every company uses case study interviews. This type of interview is very common at consulting companies (no matter what kind of consulting it is). But it’s not unusual for companies outside of consulting to use case interviews for marketing or operations roles.

In a case study interview, you’re given a real-world situation the company has faced and are tasked with analyzing it and suggesting a course of action.

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Skills you’ll build: Prioritizing, planning, data analysis, error spotting, communication, strategic thinking

Businesses use case study interviews to assess your abilities in real-time. While you’ll probably draw on a variety of skills, most case study interviews assess:

• Strategic thinking
• Analytical skills
• Common sense

The advantage of a case study interview is that the interviewer can evaluate your ability in each of these areas and see how you’ll actually use them on the job.

What Is a Fit Interview?

Some people use “case study interview” and “fit interview” interchangeably. While a fit interview and a case study interview both ask behavioral interview questions , they are not the same thing.

A case study interview assesses your ability to do the job. It primarily evaluates how you approach business problems and use your skills to solve them. A fit interview is about company culture fit. The interviewer asks questions that assess how well you’ll fit into the company, like asking you questions about what motivates you or how you lead .

Fit and case interviews are important parts of the evaluation process. Getting the job done is just as critical as getting along with coworkers and supporting the company’s mission. Depending on where you interview, you may have one fit interview and one case study interview, or the fit interview may be a smaller part of the case study interview.

What You’ll Learn in a Case Study Interview

A case study interview allows the hiring manager to see your skills in action and how you approach business challenges. But it also teaches you a lot about the company (even if you’re doing most of the talking).

In a sense, you’re behaving as an employee during a case study interview. This gives you a peek behind the curtain, allowing you to see the company’s inner workings, like how they approach business problems and what they expect from you and your performance.

For example, you may offer a novel approach to solving a problem during a case interview. How does the interviewer react to it? Are they impressed? Surprised? Is there a scowl or frown on their face? Their reaction gives you insights into how the company will likely receive your solutions.

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Skills you’ll build: Critical thinking, creativity, brainstorming

Depending on the specific company, you may have the case study interview questions in advance, but you may not. Whether you do or don’t, here’s how to prepare for a case study interview.

Conduct Deep Research

Good interview prep for any interview means researching the company. That includes things like learning more about the company’s mission and the challenges the industry faces. But when you’re preparing for a case study interview, your research needs to go deeper. 

When you answer a case study question, your answer has to be specific to the company’s clients or business objectives. For example, if you’re interviewing for a role in strategy consulting , your answer shouldn’t focus on aspects of human resources consulting (unless it’s particularly relevant).

Your research needs to include the kinds of clients the company works with and what types of problems the company solves. For example, the company may only consult for Fortune 100 companies that need accounting advice. Keep these facts in mind as you prepare for the interview.

Case Study Interview Formats

There are four types of case study interview formats:

• Candidate-led: The interviewer asks you a specific question (or gives you a prompt), and you walk the interviewer through a detailed answer.
• Employer-led: The interviewer leads you through a series of specific (and predetermined) prompts and questions, no matter your answers.
• Presentation: You’re given a problem in advance to create and present a detailed case study.
• Video: Similar to a presentation case study interview, you’ll create a video presentation of the case study.

Most companies will tell you in advance which style of case study interview you should prepare for. But if they don’t, reach out to your recruiter or check the company’s website. Many include the essential details you need to prepare for the case study interview.

Seek Out Company-Specific Tips

Speaking of companies and their websites, not only do many companies that use case study interviews tell you the format, they often include helpful tips and tricks to help candidates prepare. This includes what to expect, what the company is looking for skill-wise, and what kinds of responses they want. They may even have a few practice questions and videos you can use to help you prep.

Unlike other common interview questions , it’s not as easy to prepare an answer to case study interview questions. Even though you know it’s a case study interview, you don’t necessarily know the specifics of the case or what problems you’ll be asked to solve.

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That said, it’s likely your case study interview questions will cover one or several of these concepts:

• Entering new markets
• Increasing profits
• Cutting costs
• Turnarounds
• Mergers and acquisitions
• Pricing strategy
• Developing new products
• Industry analysis
• Competitive response

While there are many ways to answer case study interview questions, a few basic prep tips can help you get ready for every question.

In addition to what you usually bring to a job interview , make sure you bring a notepad and pen or pencil to a case study interview. Taking notes will help you better understand the questions and formulate your answers. It also gives you a place to calculate numbers and figures if you need to. Not every case study interview allows calculators, so you’ll need to be ready to do your calculations manually.

Ask Specific Questions

As you’re working through the case study, you can and should ask any clarifying questions you need. The interviewer wants to hear specific, detailed answers that solve the problem. So, whenever you’re unclear, ask a follow-up question to not only get what you need but to give the interviewer what they need. 

That said, your question(s) should be very specific. You need to verify exactly what the interview is asking so you can create an appropriate answer. Say the interviewer gives you a broad question: The client’s revenue is falling. How do you help them increase it? You can follow up with a very specific question or two to make sure you understand what the interviewer is asking:

You’re asking how I would help the client raise revenue, correct? Are you also asking how I would help them increase their profit and cut costs?

>>Related: 5 Top Questions to Ask in an Interview (and Why You Should Ask Them)

Talk Them Through It

A big part of the case study interview is seeing you in action. However, in this case, “see” really means “how you think.” Since the interviewer can’t hear your inner monologue, you’ll need to practice thinking out loud.

While the interviewer wants to hear your solution, they also want to hear how you got there. That means talking through your entire thought process. Instead of saying, “I’d do X,” you have to explain how you arrived at your decision while you’re getting there.

Because not everyone thinks out loud, it may feel unnatural to you, and you likely won’t be expected to do it on the job. But it’s crucial to practice this skill — and it is a skill — because the interviewer is expecting you to do it in a case study interview.

Want to give a case study a shot? Try out a Forage consulting virtual simulation program and gain the skills you’ll need to ace a case study interview.

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How To Answer A Case Study

We totally understand the dire need of students to find credible help with their case studies. Whether they are the students of a college or a university, time and again, you will be asked to make your case studies effectively. This brings to the question as to who will answer a case study impressively? Students can find several online companies that guarantee some great tips for answering your case studies nicely, but not all of them are to rely on.

We bet we have the best step to step guide with us that can easily get you to the end of your case study solutions . The following tips will promise to help you efficiently with your case, irrespective of how difficult they are. Precisely, when it comes to the question of how to answer a case study, it’s all about words. So, do not hesitate in using the correct and researched words to leave a lasting impact.

How To Answer A Consulting Case Study On Three Major Types

Case studies are not an easy task to fulfill in your academic life. If students dare to take it lightly, chances are you will not be able to impress your teachers. However, case studies do not come as easy as they sound. There are three significant types of case studies that are popular among students.

• Legal Case Study
• Nursing Case Study
• Management Case Study

These are the common subjects that will lead to stress in your college or university life. With so much other stuff to do, students don’t feel happy about the pressure of finding a fruitful answer to the case study. There is no doubt it’s quite a challenging situation for any student who has to make a flawless case study. That’s why we usually advise our students to get online help for their case study writing. Because of it, they can have fewer chances of flunking in these exams.

The Helpful 15 Tips On How To Answer A Case Study

When students have no option but to write a persuasive case study, it is preferable to set out on a journey to get external help for it. You can get easy help online. You will be pleased to know that our writing help has some best case study assignment writers who can distress you in a matter of a few hours. But, the most vital thing to know is that a student should know the basic formulas to find good answers to your case studies on their own.

We have collected some fabulous notable tips for our students can help them for years with their case studies:

• Use Conventional Tone: The foremost thing while writing case studies is to use a professional tone to have a lasting impact on your papers.
• Use Your Words Only: It is equally important for a student to use simple and their wording while writing case studies.
• Don’t Be Too Precise: Sometimes, providing proper sentences gives an understandable image to your case studies. Hence, soon use shorter or confusing sentences.
• Use Examples: The students should support their case studies with relevant examples. The examples can be given through a video, statements which should prove your opinions as well.
• Accurate Grammar: Your writing is the crucial thing, Don’t engage in poorly written content. Use proper English without any grammatical errors or spelling mistakes.
• No Acronyms: Students should avoid using acronyms while writing their case studies.
• Use Life Experiences: Your practical life experiences are important to make a compelling case study. Try to use live examples to give a more impactful expression to your case studies.
• Justified Statements Are Necessary: The best way to answer a case study is to agree or disagree with the justified statements.
• Make Complete Sentences: It is also an important point to make a flawless case study paper. While writing, try to make complete sentences.
• No Spelling Flaws: Bad grammar or wrong spellings are not tolerable. Hence, students should do keen writing with no spelling mistakes.
• Proper Answers: Try to give proper answers to the questions.
• Adequate Justifications: Justifications are crucial. Make adequate justifications to avoid any confusion.
• Sufficient Reasoning: The reasoning should be enough while writing a case study.
• No indefinite Answers: Indefinite answers cause a hell of a lot of confusion and complexity in a case study. That’s why the students should avoid making indefinite answers.
• Provide Proper Conversations: It is also vital to contribute as much as possible in conversations.

Related: How To Buy A Case Study

How To Properly Answer A Case Study

Precisely, a good case study is a scenario that students will analyze out of a professional concept. However, it is blended with useful questions that demand definite answers. There can be a sample case study assignment online that can always help a student while writing one but, it is equally important to know the proper way of answering a case study.

• Reading a case study is the foremost important thing. Later analyze the question carefully too.
• It is mandatory to identify the issue of the case study thoroughly
• A bridge is vital to link the theory to practice
• Planning of the answers comes next.
• Start making your case study answers
• Proofread and edit it carefully to avoid mistakes
• Submit the case studies to your tutors.

How To Answer A Case Study Interview

This aspect is a bit tricky. In a case study interview, you will be given a case and will be asked to analyze the situation with possible solutions.

Here are some common and most useful tips about answering the interview questions:

• Listening carefully to the questions is the key
• Asl the proper questions
• Highlight your approach
• do brainstorming
• Don’t lose focus
• Be attentive to feedback
• Prove your quantitative skills
• Summarize in detail

To write a productive case study is hard, but if you choose online help for it, this task becomes really easy. Be a smarter version of yourself and find great ways of handling the answers to your case study problems. We have a proficient team that can make this hectic task to answer your case study a piece of cake. Don’t be late to avail of our quality help.

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The Internet is filled with frameworks on how to approach a case study. But which one will help you ace your case and land an offer at a top consulting firm?

At My Consulting Offer, former Bain, BCG, and McKinsey consultants have developed a proven 4-step approach that will help you tackle any type of case study. We’v helped over 600 recruits land the consulting jobs of their dream.

Want to know the secret? Keep reading!

In this article, we’ll walk you through our 4-step approach and talk about what the interviewer expects at each step, including:

• How to approach a case study.
• Clarifying the client’s objectives.
• Framing a logical structure.
• Making sense of the provided information.
• Giving a strong recommendation.

Let’s get started!

Approaching a Case Study

Analyzing the right case information, case interview opening: getting to know the key objective, concluding your case with a strong recommendation, framing a customized problem-solving structure.

A case interview always starts with a prompt. A prompt is the initial information about the case provided by the interviewer. It gives you a brief background of the client’s problem and the key objective.

Here’s an example:

“Your client today is an NYC-based violinist. She’s been saving up for her wedding, but she broke her leg and can’t leave her apartment. She’s got to find a new plan for coming up with her wedding savings now and needs help.”

In the above example, we get to know the background and the objective.

Background: Our client Maria is an NYC-based violinist and has been saving for her wedding.

Objective: Find ways for the client to increase her savings for her wedding without leaving her apartment. 

After the prompt is given, you’re expected to drive the case forward. Our 4-step approach will help you do just that.

• Opening – Understand and reconfirm the objective and ask clarifying questions.
• Structure – Develop a problem-solving structure to answer the key questions.
• Analysis – Dive deeper into analyzing relevant issues and use data provided by your interviewer to make conclusions.
• Recommendation – Give a strong actionable recommendation by tying together the insights.

Let’s dive into each step of the 4-step guide so you can solve cases like a pro!

The first step to solving any problem is to know the key objective a.k.a. the “north star” which will help you guide the case in the right direction.

This seemingly simple, but it’s where many interviewees fail. They think the prompt has given them all the relevant information, so they rush to start solving the problem.

But, as you saw in the prompt, the objective is touched upon but isn’t clear or measurable . You got to know that the client is looking for ways to increase her wedding savings while staying in her apartment with a broken leg.

We still don’t know what the target is and how much of it is already saved. Additionally, as there were no clarifying questions asked, no other details were shared by the interviewer.

Nail the case & fit interview with strategies from former MBB Interviewers that have helped 89.6% of our clients pass the case interview.

What should the Case Opening Look Like?

It’s important to ask questions like:

• What does success look like for the client? Does she have a target in mind for her wedding?
• How was she making money before she broke her leg?
• What are her income streams?
• Is she willing to cut her expenses to increase savings or is she looking only for ways to increase her income?

These questions help us understand the following:

Tangible or Measurable Objective – What is the target in the client’s mind?

Additional Information – prior income sources, income source while stuck in her apartment, her focus on increasing income rather than reducing costs.

What does the interviewer expect from you in the case opening?

• Restate the prompt in your own words
• Confirm the key objective 
• Ask a few key clarifying questions (3-5) to know more about the overarching context of the case – making sure you understand the client’s product, business model, or geographic focus 

Now let’s learn how to create a comprehensive and customized problem-solving structure.

The internet is filled with problem-solving approaches and frameworks, like:

• The BCG 2 x 2 Matrix
• The Profitability Formula
• McKinsey’s 7S Framework
• Porter’s 5 Forces

These frameworks help break business problems into smaller parts that can be analyzed to figure out a solution. But as these frameworks are generic, it might feel like they are being force-fitted to the problem in your case. No standard framework will ever fit all situations. 

Creating a case-specific problem-solving structure isn’t difficult and with the right approach, you can create it with ease.

How to Create a Customized Structure

Start with the key objective, increasing Maria’s savings for her wedding. How can we break this problem down into sub-parts? If you were using a generic framework, you might use the 3C + P framework and break the problem into:

• Competitors

You could then think of questions in each bucket that would help Maria understand potential opportunities to expand her income. 

But, with this approach, you wouldn’t be likely to stand out! Lots of candidates will approach this case with the same 4 buckets. This is why a customized approach is important.

While creating your structure, there are a few things that you should do to ensure that your structure touches on all relevant points and helps you to drive the case forward. Your structure should be:

• Logical – Each bucket in the structure should logically align with the key objective.
• Personalized – As you are creating the buckets, personalize them to the case at hand.
• MECE – MECE stands for “ Mutually exclusive, Collectively exhaustive .” This helps you ensure that there are no overlapping buckets and you cover all the key aspects of the problem.
• Depth – As you dig deeper into each bucket, ask yourself if you have covered all possible questions in the bucket. Create sub-buckets of the main buckets wherever necessary.

You can read more about structuring your analysis of business problems in our article on issue trees .

What does a Good vs. Great Structure Look Like?

Comparing the two structures above, we can see that Candidate B has created a better structure than Candidate A. Although Candidate A covered all important aspects, Candidate B has personalized their structure to Maria’s problem.

Communicating the structure in an easy-to-understand manner is as important as creating a robust structure. When communicating the structure:

• Ensure that the interviewer can follow your structure.
• Communicate one level at a time.
• Use a numbered list to walk through the structure.

After walking the interviewer through the structure, you should choose the bucket that should be explored first to answer the key question. You could say something like –

“Now that we have walked through the opportunities for increasing her revenue, I’d like to dive into the skills Maria has that she could leverage.”

The interviewer could either agree or disagree with the first bucket that you want to dig deeper into. Some companies, like McKinsey, use interviewer-led case interviews and will lead you through the case following a specified path. Others, like Bain and BCG, will let you lead the case and just nudge you if you seem to be veering off-path. In either case, you’ll need to start by brainstorming and providing ideas on the first bucket or you’ll need to analyze data and derive conclusions.

There are 3 main types of analysis you may need to do to answer the key question:

Brainstorming

Market sizing, exhibit reading.

Let’s see how each of these would help us drive the case forward and derive conclusions.

In a brainstorming exercise, a strong candidate will generate 8-10 ideas bucketed into categories. In the current case example, you could be asked for ideas on how Maria could make more money.

One set of categories you could use to generate ideas follows what we call the “X-not X” approach. Essentially, you start with a bucket like “playing music” and generate ideas in that bucket. Then switch to “not playing” and generate ideas for this bucket. This will help you in generating at least 2x ideas you otherwise would and will look more impressive to your interviewer because it is MECE and structured.

Let’s see how brainstorming plays out in our case example.

“Maria likes your approach and wants to start right away. Because she is currently not making any money, she would like some ideas. What are some ideas you have on how she could make money? She only wants to focus on leveraging her violin talents.”

The above example shows how you could use the “X-not X” approach to generate a lot of ideas – and how you could even further structure the ideas into “online” and “offline” categories to make it an exceptional brainstorming example.

You may also be expected to calculate the size of a market for your client’s product or service – after all, one of the most important things to know before pursuing an opportunity is the size of that opportunity. In the current example, you could be asked to calculate the income that Maria could earn by offering online violin classes.

There are 2 approaches to market sizing:

• Top-down: This is used when there are no constraints. In this approach, you start with the overall population that may be interested in the product or service and slice it down based on the segments of the market most likely to purchase. The top-down approach is best for national and global markets.
• Bottom-up: This approach is used when there are some constraints, like supply constraints, a limited number of hours, etc. In this approach, you start with the limiting factor and try to estimate the maximum that can be achieved based on the constraints.

Let’s see how we can use market sizing to help our client.

“Maria likes the ideas you came up with. She thought about being a violin teacher at one point since she had a great one when she started as a kid and is curious, how much could she make if she were to teach one-on-one Zoom classes for the next month? She wants to start small before she goes to group classes and, in the beginning, it will be just her teaching.”

Here’s an example of how you could work through this question:

The above shows how you could estimate the income which our client can expect to make in the first month. 

Follow up your analysis by giving your answer the “sniff test.” Does it seem right at a high level? Here we see that $4,000 is the estimated first month’s income, but as this would be the first time Maria will be taking online classes, she won’t be working at full capacity from the start. Her earnings will probably be lower than $4,000.

But, in the long run, it’s a good idea to start offering lessons because at full capacity, Maria will be able to earn $8,000 per month.

In case interviews, you’ll be expected to derive conclusions based on tables or charts provided by your interviewer. In the current example, you could be asked to help the client prioritize which type of client should she target for her violin classes.

Let’s see what data is available and how we can conclude which segment to go after.

“Maria is happy to know that you think providing 1:1 violin lessons over Zoom is a viable idea. 

She knows that a lot of people are interested in violin lessons, but to make sure she can tailor her marketing and lessons, she is interested in only going after one or two segments.

Which one should she go after?”

The first step to deriving insights from an exhibit is to read it thoroughly and ideally interpret it aloud as you go for your interviewer. This chart has data about willingness to pay and competitiveness across various segments. It gives an idea about the level of competition from other violin instructors. The market size of each segment is portrayed using the size of the circle. At first glance, it might seem that the client should go ahead with the segment which has the lowest competition and highest willingness to pay, which is the “Adult-Advanced” segment. But, that segment has a really small market size and Maria would need extensive teaching experience to cater to advanced students.

This is the first time Maria is getting into this market, but she also wants to have a high earning potential. The optimum segment would be one with a good market size and a reasonable trade-off between willingness to pay and competitiveness. 

Based on this, Maria should go with the “college-intermediate” and “adult-intermediate” segments. She would be able to cater to both these segments with ease. Additionally, the combined market size is considerable and the relative trade-off of competitiveness and willingness to pay is suitable as well.

What does the interviewer expect when you are doing analysis and deriving insights?

• Pause to think about the structure for marking sizing or ideas for brainstorming. If you’re asked to read an exhibit, take a moment to understand it and lay out what it says to your interviewer before interpreting the data it provides.
• Offer insights into your client’s problem as the data presents them and draw conclusions.
• Drive the case forward based on the insights. What does this data mean for solving your client’s problem?

Maria came to you with a problem in hand and won’t be thrilled to just get the insights in bits or pieces. Pull your problem-solving together for her with a persuasive recommendation.

Think of the case interview as baking an amazing cake. While the structure and derived insights form the main ingredients for baking the cake, the recommendation is like the cherry on top. It helps in creating a lasting positive impression.

Similar to the opening of the case, the recommendation can seem relatively straightforward, but it is definitely nuanced. MCO’s 5R framework could help you deliver great recommendations for every case.

How should you present your recommendations?

MCO’s 5R Framework:

• Recap: As consultants, you deal with CXO (e.g., CEO, CFO) level clients who are busy with many projects, so recapping the problem you’re solving is essential to set the tone of the meeting.
• Recommendation: State your recommendations clearly without any additional detail to showcase clarity.
• Reasons: Follow this with logical reasons for your recommendations to provide context and show the credibility of the recommendations.
• Risks: Every decision has risks associated with it. Just lay them out so the client knows what to watch out for during implementation.
• Retain: End the recommendations with key next steps to pursue the opportunity, ensuring continuous engagement with the client.

Let’s see how to give a strong recommendation for our case example.

“Your client calls you and wants to know what you recommend.”

What does the interviewer expect when closing the case?

• Keep the recommendation clear and succinct keeping the audience in mind.
• Explain everything with a reason and point out risks associated with the recommendation.
• Be presentable and communicate the recommendations with confidence.
• Ensure that the next steps are clearly laid out.

A final note: Not all cases have a “Right” and “Wrong” answer. In some, the math is very cut and dry but in others, there is a mix of evidence and it is a judgment call on what to recommend. Remember that a well-defended recommendation is more important than the “exact right answer.”

– – – – –

In this article, we’ve provided frameworks and tips to ace the different sections of a case interview. You are now equipped with the knowledge to:

• Approach a case study.
• Clarify client objectives.
• Frame a structure for effective problem-solving.
• Analyze the right information.
• Give a recommendation.

Apply these tips by practicing sample cases with case partners as much as possible so you’ll be ready to ace your next consulting case interview.

Happy casing!

Still have questions?

If you have more questions about how to approach a case interview, leave them in the comments below. One of My Consulting Offer’s case coaches will answer them.

Other people preparing for consulting case interviews the following pages helpful:

• Our Ultimate Guide to Case Interview Prep
• Case Interview Frameworks
• Issue Trees
• MECE Case Structures
• Case Interview Examples
• Case Interview Formulas

Help with Case Study Interview Prep

Thanks for turning to My Consulting Offer for advice on case study interview prep. My Consulting Offer has helped almost 89.6% of the people we’ve worked with get a job in management consulting. We want you to be successful in your consulting interviews too. For example, here is how Sharmeen was able to get her offer at BCG.

We want you to be successful in your consulting interviews too.

If you want to learn more about how to ace your case interviews, schedule a free call with a member of our team. We’ll show you how you get an offer without spending hundreds of hours preparing.

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3 Top Strategies to Master the Case Interview in Under a Week

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100 Best Case Study Questions for Your Next Customer Spotlight

Updated: November 29, 2022

Published: March 24, 2016

Case studies and testimonials are helpful to have in your arsenal. But to build an effective library, you need to ask the right case study questions. You also need to know how to write a case study .

Case studies are customers' stories that your sales team can use to share relevant content with prospects . Not only that, but case studies help you earn a prospect's trust, show them what life would be like as your customer, and validate that your product or service works for your clients.

Before you start building your library of case studies, check out our list of 100 case study questions to ask your clients. With this helpful guide, you'll have the know-how to build your narrative using the " Problem-Agitate-Solve " Method.

What makes a good case study questionnaire?

The ultimate list of case study questions, how to ask your customer for a case study, creating an effective case study.

Certain key elements make up a good case study questionnaire.

A questionnaire should never feel like an interrogation. Instead, aim to structure your case study questions like a conversation. Some of the essential things that your questionnaire should cover include:

• The problem faced by the client before choosing your organization.
• Why they chose your company.
• How your product solved the problem clients faced.
• The measurable results of the service provided.
• Data and metrics that prove the success of your service or product, if possible.

You can adapt these considerations based on how your customers use your product and the specific answers or quotes that you want to receive.

What makes a good case study question?

A good case study question delivers a powerful message to leads in the decision stage of your prospective buyer's journey.

Since your client has agreed to participate in a case study, they're likely enthusiastic about the service you provide. Thus, a good case study question hands the reins over to the client and opens a conversation.

Try asking open-ended questions to encourage your client to talk about the excellent service or product you provide.

Free Case Study Templates

Tell us about yourself to access the templates..

Categories for the Best Case Study Questions

• Case study questions about the customer's business
• Case study questions about the environment before the purchase
• Case study questions about the decision process
• Case study questions about the customer's business case
• Case study questions about the buying team and internal advocates
• Case study questions about customer success
• Case study questions about product feedback
• Case study questions about willingness to make referrals
• Case study question to prompt quote-worthy feedback
• Case study questions about the customers' future goals

Showcase your company's success using these three free case study templates.

• Data-Driven Case Study Template
• Product-Specific Case Study Template
• General Case Study Template

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Case Study Interview Questions About the Customer's Business

Knowing the customer's business is an excellent way of setting the tone for a case study.

Use these questions to get some background information about the company and its business goals. This information can be used to introduce the business at the beginning of the case study — plus, future prospects might resonate with their stories and become leads for you.

• Would you give me a quick overview of [company]? This is an opportunity for the client to describe their business in their own words. You'll get useful background information and it's an easy prompt to get the client talking.
• Can you describe your role? This will give you a better idea of the responsibilities they are subject to.
• How do your role and team fit into the company and its goals? Knowing how the team functions to achieve company goals will help you formulate how your solution involves all stakeholders.
• How long has your company been in business? Getting this information will help the reader gauge if pain points are specific to a startup or new company vs. a veteran company.
• How many employees do you have? Another great descriptor for readers to have. They can compare the featured company size with their own.
• Is your company revenue available? If so, what is it? This will give your readers background information on the featured company's gross sales.
• Who is your target customer? Knowing who the target audience is will help you provide a better overview of their market for your case study readers.
• How does our product help your team or company achieve its objectives? This is one of the most important questions because it is the basis of the case study. Get specifics on how your product provided a solution for your client. You want to be able to say "X company implemented our solution and achieved Y. "
• How are our companies aligned (mission, strategy, culture, etc.)? If any attributes of your company's mission or culture appealed to the client, call it out.

How many people are on your team? What are their roles? This will help describe key players within the organization and their impact on the implementation of your solution.

Case Study Interview Questions About the Environment Before the Purchase

A good case study is designed to build trust. Ask clients to describe the tools and processes they used before your product or service. These kinds of case study questions will highlight the business' need they had to fulfill and appeal to future clients.

• What was your team's process prior to using our product? This will give the reader a baseline to compare the results for your company's product.
• Were there any costs associated with the process prior to using our product? Was it more expensive? Was it worth the cost? How did the product affect the client's bottom line? This will be a useful metric to disclose if your company saved the client money or was more cost-efficient.
• What were the major pain points of your process prior to using our product? Describe these obstacles in detail. You want the reader to get as much information on the problem as possible as it sets up the reasoning for why your company's solution was implemented.
• Did our product replace a similar tool or is this the first time your team is using a product like this? Were they using a similar product? If so, having this information may give readers a reason to choose your brand over the competition.
• What other challenges were you and your team experiencing prior to using our product? The more details you can give readers regarding the client's struggles, the better. You want to paint a full picture of the challenges the client faced and how your company resolved them.
• Were there any concerns about how your customers would be impacted by using our product? Getting answers to this question will illustrate to readers the client's concerns about switching to your service. Your readers may have similar concerns and reading how your client worked through this process will be helpful.
• Why didn't you buy our product or a similar product earlier? Have the client describe any hesitations they had using your product. Their concerns may be relatable to potential leads.
• Were there any "dealbreakers" involved in your decision to become a customer? Describing how your company was able to provide a solution that worked within those parameters demonstrates how accommodating your brand is and how you put the customer first. It's also great to illustrate any unique challenges the client had. This better explains their situation to the reader.
• Did you have to make any changes you weren't anticipating once you became a customer? Readers of your case study can learn how switching to your product came with some unexpected changes (good or bad) and how they navigated them. If you helped your client with troubleshooting, ask them to explain that here.

How has your perception of the product changed since you've become a customer? Get the interviewee to describe how your product changed how they do business. This includes how your product accomplished what they previously thought was impossible.

Case Study Interview Questions About the Decision Process

Readers of the case study will be interested in which factors influenced the decision-making process for the client. If they can relate to that process, there's a bigger chance they'll buy your product.

The answers to these questions will help potential customers through their decision-making process.

• How did you hear about our product? If the client chose to work with you based on a recommendation or another positive case study, include that. It will demonstrate that you are a trusted brand with an established reputation for delivering results.
• How long had you been looking for a solution to this problem? This will add to the reader's understanding of how these particular challenges impacted the company before choosing your product.
• Were you comparing alternative solutions? Which ones? This will demonstrate to readers that the client explored other options before choosing your company.
• Would you describe a few of the reasons you decided to buy our product? Ask the interviewee to describe why they chose your product over the competition and any benefits your company offered that made you stand out.
• What were the criteria you used when deciding to buy our product? This will give readers more background insight into the factors that impacted their decision-making process.
• Were there any high-level initiatives or goals that prompted the decision to buy? For example, was this decision motivated by a company-wide vision? Prompt your clients to discuss what lead to the decision to work with you and how you're the obvious choice.
• What was the buying process like? Did you notice anything exceptional or any points of friction? This is an opportunity for the client to comment on how seamless and easy you make the buying process. Get them to describe what went well from start to finish.
• How would you have changed the buying process, if at all? This is an opportunity for you to fine-tune your process to accommodate future buyers.
• Who on your team was involved in the buying process? This will give readers more background on the key players involved from executives to project managers. With this information, readers can see who they may potentially need to involve in the decision-making process on their teams.

Case Study Interview Questions About the Customer's Business Case

Your case study questions should ask about your product or solution's impact on the customer's employees, teams, metrics, and goals. These questions allow the client to praise the value of your service and tell others exactly what benefits they derived from it.

When readers review your product or service's impact on the client, it enforces the belief that the case study is credible.

• How long have you been using our product? This will help readers gauge how long it took to see results and your overall satisfaction with the product or service.
• How many different people at your company use our product? This will help readers gauge how they can adapt the product to their teams if similar in size.
• Are there multiple departments or teams using our product? This will demonstrate how great of an impact your product has made across departments.
• How do you and your team currently use the product? What types of goals or tasks are you using the product to accomplish? Get specifics on how the product actively helps the client achieve their goals.
• If other teams or departments are using our product, do you know how they're using it? With this information, leads can picture how they can use your product across their teams and how it may improve their workflow and metrics.
• What was the most obvious advantage you felt our product offered during the sales process? The interviewee should explain the benefits they've gained from using your product or service. This is important for convincing other leads you are better than the competition.
• Were there any other advantages you discovered after using the product more regularly? Your interviewee may have experienced some additional benefits from using your product. Have them describe in detail what these advantages are and how they've helped the company improve.
• Are there any metrics or KPIs you track with our product? What are they? The more numbers and data the client can provide, the better.
• Were you tracking any metrics prior to using our product? What were they? This will allow readers to get a clear, before-and-after comparison of using your product.
• How has our product impacted your core metrics? This is an opportunity for your clients to drive home how your product assisted them in hitting their metrics and goals.

Case Study Interview Questions About the Buying Team and Internal Advocates

See if there are any individuals at the customer's company who are advocates for your product.

• Are there any additional team members you consider to be advocates for our product? For example, does anyone stick out as a "power user" or product expert on your team? You may want to interview and include these power users in your case study as well. Consider asking them for tips on using your service or product.
• Is there anyone else on your team you think we should talk to? Again, the more people can share their experience using your product, the better.
• Are there any team members who you think might not be the biggest fans of our product or who might need more training? Providing extra support to those struggling with your product may improve their user experience and turn into an opportunity to not only learn about their obstacles but turn them into a product fan
• Would you share some details about how your team implemented our product? Get as much information as possible about the rollout. Hopefully, they'll gush about how seamless the process was.
• Who from your company was involved in implementing our product? This will give readers more insight into who needs to be involved for a successful rollout of their own.
• Were there any internal risks or additional costs involved with implementing our product? If so, how did you address them? This will give insight into the client's process and rollout and this case study question will likely provide tips on what potential leads should be on the lookout for.
• Is there a training process in place for your team's use of our product? If so, what does it look like? If your company provided support and training to the client, have them describe that experience.
• About how long does it take a new team member to get up to speed with our product? This will help leads determine how much time it will take to onboard an employee to your using your product. If a new user can quickly get started seamlessly, it bodes well for you.
• What was your main concern about rolling this product out to your company? Describing their challenges in detail will provide readers with useful insight.

Case Study Interview Questions About Customer Success

Has the customer found success with your product? Ask these questions to learn more.

• By using our product can you measure any reduced costs? If it has, you'll want to emphasize those savings in your case study.
• By using our product can you measure any improvements in productivity or time savings? Any metrics or specific stories your interviewee can provide will help demonstrate the value of your product.
• By using our product can you measure any increases in revenue or growth? Again, say it with numbers and data whenever possible.
• Are you likely to recommend our product to a friend or colleague? Recommendations from existing customers are some of the best marketing you can get.
• How has our product impacted your success? Your team's success? Getting the interviewee to describe how your product played an integral role in solving their challenges will show leads that they can also have success using your product.
• In the beginning, you had XYZ concerns; how do you feel about them now? Let them explain how working with your company eliminated those concerns.
• I noticed your team is currently doing XYZ with our product. Tell me more about how that helps your business. Illustrate to your readers how current customers are using your product to solve additional challenges. It will convey how versatile your product is.
• Have you thought about using our product for a new use case with your team or at your company? The more examples of use cases the client can provide, the better.
• How do you measure the value our product provides? Have the interviewee illustrate what metrics they use to gauge the product's success and how. Data is helpful, but you should go beyond the numbers. Maybe your product improved company morale and how teams work together.

Case Study Interview Questions About Product Feedback

Ask the customer if they'd recommend your product to others. A strong recommendation will help potential clients be more open to purchasing your product.

• How do other companies in this industry solve the problems you had before you purchased our product? This will give you insight into how other companies may be functioning without your product and how you can assist them.
• Have you ever talked about our product to any of your clients or peers? What did you say? This can provide you with more leads and a chance to get a referral.
• Why would you recommend our product to a friend or client? Be sure they pinpoint which features they would highlight in a recommendation.
• Can you think of any use cases your customers might have for our product? Similar industries may have similar issues that need solutions. Your interviewee may be able to provide a use case you haven't come up with.
• What is your advice for other teams or companies who are tackling problems similar to those you had before you purchased our product? This is another opportunity for your client to talk up your product or service.
• Do you know someone in X industry who has similar problems to the ones you had prior to using our product? The client can make an introduction so you can interview them about their experience as well.
• I noticed you work with Company Y. Do you know if they are having any pain points with these processes? This will help you learn how your product has impacted your client's customers and gain insight into what can be improved.
• Does your company participate in any partner or referral programs? Having a strong referral program will help you increase leads and improve customer retention.
• Can I send you a referral kit as a thank-you for making a referral and give you the tools to refer someone to us? This is a great strategy to request a referral while rewarding your existing customers.
• Are you interested in working with us to produce additional marketing content? The more opportunities you can showcase happy customers, the better.

Case Study Interview Questions About Willingness to Make Referrals

• How likely are you to recommend our product to a friend or client? Ideally, they would definitely refer your product to someone they know.
• Can you think of any use cases your customers might have for our product? Again, your interviewee is a great source for more leads. Similar industries may have similar issues that need solutions. They may be able to provide a use case you haven't come up with.
• I noticed you work with Company Y; do you know if they are having any pain points with these processes? This will help you learn how your product has impacted your client's customers and gain insight into what can be improved.

Case Study Interview Questions to Prompt Quote-Worthy Feedback

Enhance your case study with quotable soundbites from the customer. By asking these questions, prospects have more insight into other clients and their success with your product — which helps build trust.

• How would you describe your process in one sentence prior to using our product? Ideally, this sentence would quickly and descriptively sum up the most prominent pain point or challenge with the previous process.
• What is your advice to others who might be considering our product? Readers can learn from your customer's experience.
• What would your team's workflow or process be like without our product? This will drive home the value your product provides and how essential it is to their business.
• Do you think the investment in our product was worthwhile? Why? Have your customer make the case for the value you provide.
• What would you say if we told you our product would soon be unavailable? What would this mean to you? Again, this illustrates how integral your product is to their business.
• How would you describe our product if you were explaining it to a friend? Your customers can often distill the value of your product to their friends better than you can.
• What do you love about your job? Your company? This gives the reader more background on your customer and their industry.
• What was the worst part of your process before you started using our product? Ideally, they'd reiterate how your product helped solve this challenge.
• What do you love about our product? Another great way to get the customer's opinion about what makes your product worth it.
• Why do you do business with us? Hopefully, your interviewee will share how wonderful your business relationship is.

Case Study Interview Questions About the Customers' Future Goals

Ask the customer about their goals, challenges, and plans for the future. This will provide insight into how a business can grow with your product.

• What are the biggest challenges on the horizon for your industry? Chances are potential leads within the same industry will have similar challenges.
• What are your goals for the next three months? Knowing their short-term goals will enable your company to get some quick wins for the client.
• How would you like to use our product to meet those challenges and goals? This will help potential leads understand that your product can help their business as they scale and grow.
• Is there anything we can do to help you and your team meet your goals? If you haven't covered it already, this will allow your interviewee to express how you can better assist them.
• Do you think you will buy more, less, or about the same amount of our product next year? This can help you gauge how your product is used and why.
• What are the growth plans for your company this year? Your team? This will help you gain insight into how your product can help them achieve future goals.
• How can we help you meet your long-term goals? Getting specifics on the needs of your clients will help you create a unique solution designed for their needs.
• What is the long-term impact of using our product? Get their feedback on how your product has created a lasting impact.
• Are there any initiatives that you personally would like to achieve that our product or team can help with? Again, you want to continue to provide products that help your customers excel.
• What will you need from us in the future? This will help you anticipate the customer's business needs.
• Is there anything we can do to improve our product or process for working together in the future? The more feedback you can get about what is and isn't working, the better.

Before you can start putting together your case study, you need to ask your customer's permission.

If you have a customer who's seen success with your product, reach out to them. Use this template to get started:

Thank you & quick request

Hi [customer name],

Thanks again for your business — working with you to [solve X, launch Y, take advantage of Z opportunity] has been extremely rewarding, and I'm looking forward to more collaboration in the future.

[Name of your company] is building a library of case studies to include on our site. We're looking for successful companies using [product] to solve interesting challenges, and your team immediately came to mind. Are you open to [customer company name] being featured?

It should be a lightweight process — [I, a product marketer] will ask you roughly [10, 15, 20] questions via email or phone about your experience and results. This case study will include a blurb about your company and a link to your homepage (which hopefully will make your SEO team happy!)

In any case, thank you again for the chance to work with you, and I hope you have a great week.

[Your name]

If one of your customers has recently passed along some praise (to you, their account manager, your boss; on an online forum; to another potential customer; etc.), then send them a version of this email:

Hey [customer name],

Thanks for the great feedback — I'm really glad to hear [product] is working well for you and that [customer company name] is getting the results you're looking for.

My team is actually in the process of building out our library of case studies, and I'd love to include your story. Happy to provide more details if you're potentially interested.

Either way, thank you again, and I look forward to getting more updates on your progress.

You can also find potential case study customers by usage or product data. For instance, maybe you see a company you sold to 10 months ago just bought eight more seats or upgraded to a new tier. Clearly, they're happy with the solution. Try this template:

I saw you just [invested in our X product; added Y more users; achieved Z product milestone]. Congratulations! I'd love to share your story using [product] with the world -- I think it's a great example of how our product + a dedicated team and a good strategy can achieve awesome results.

Are you open to being featured? If so, I'll send along more details.

Case Study Benefits

• Case studies are a form of customer advocacy.
• Case studies provide a joint-promotion opportunity.
• Case studies are easily sharable.
• Case studies build rapport with your customers.
• Case studies are less opinionated than customer reviews.

1. Case studies are a form of customer advocacy.

If you haven't noticed, customers aren't always quick to trust a brand's advertisements and sales strategies.

With every other brand claiming to be the best in the business, it's hard to sort exaggeration from reality.

This is the most important reason why case studies are effective. They are testimonials from your customers of your service. If someone is considering your business, a case study is a much more convincing piece of marketing or sales material than traditional advertising.

2. Case studies provide a joint-promotion opportunity.

Your business isn't the only one that benefits from a case study. Customers participating in case studies benefit, too.

Think about it. Case studies are free advertisements for your customers, not to mention the SEO factor, too. While they're not promoting their products or services, they're still getting the word out about their business. And, the case study highlights how successful their business is — showing interested leads that they're on the up and up.

3. Case studies are easily sharable.

No matter your role on the sales team, case studies are great to have on hand. You can easily share them with leads, prospects, and clients.

Whether you embed them on your website or save them as a PDF, you can simply send a link to share your case study with others. They can share that link with their peers and colleagues, and so on.

Case studies can also be useful during a sales pitch. In sales, timing is everything. If a customer is explaining a problem that was solved and discussed in your case study, you can quickly find the document and share it with them.

4. Case studies build rapport with your customers.

While case studies are very useful, they do require some back and forth with your customers to obtain the exact feedback you're looking for.

Even though time is involved, the good news is this builds rapport with your most loyal customers. You get to know them on a personal level, and they'll become more than just your most valuable clients.

And, the better the rapport you have with them, the more likely they'll be to recommend your business, products, or services to others.

5. Case studies are less opinionated than customer reviews.

Data is the difference between a case study and a review. Customer reviews are typically based on the customer's opinion of your brand. While they might write a glowing review, it's completely subjective and there's rarely empirical evidence supporting their claim.

Case studies, on the other hand, are more data-driven. While they'll still talk about how great your brand is, they support this claim with quantitative data that's relevant to the reader. It's hard to argue with data.

An effective case study must be genuine and credible. Your case study should explain why certain customers are the right fit for your business and how your company can help meet their specific needs. That way, someone in a similar situation can use your case study as a testimonial for why they should choose your business.

Use the case study questions above to create an ideal customer case study questionnaire. By asking your customers the right questions, you can obtain valuable feedback that can be shared with potential leads and convert them into loyal customers.

Editor’s Note: This article was originally published in June 2021 and has been updated for comprehensiveness.

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Key Study Skills

• Assignment Calculator
• Managing nervousness
• Allocating time and using the marking system
• Using the reading time effectively
• Answering multi-choice and short answer questions
• Answering essay and case study questions in exams
• Managing exam stress
• Academic Skills for Success

Answering essay questions in exams

Writing an essay in an exam is similar in many ways to writing an essay for an assignment: It needs to be clearly structured, and your ideas need to be linked and supported by evidence.

Essay questions in exams

• Read the question through carefully to make sure you are answering what has been asked.  Missing one part of a question can cost you a lot of marks.
• Make a quick plan of the points you want to include in your answer.
• Use essay structure: introduction, points, conclusion.  But if you run out of time, it can be a good idea to write notes.
• Get right to the point from the beginning.  Use the words from the question to write your first sentence. For example:

Question: What do you think is the most important intercultural communication issue in New Zealand? First sentence: At present in New Zealand the most important intercultural communication issue is...

• Remember to include one idea per paragraph, and to begin each paragraph with a clear topic sentence.
• Make sure your writing is legible.
• Grammar, punctuation and spelling are not as important as in an assignment but should still be of a good standard.

Answering case study questions

Exam questions that ask you to anlayse case studies (also called scenarios) are usually designed to test your ability to relate theories and concepts to real-world situations.

Preparing for case studies before the exam:

• Start by identifying the theories and concepts covered in your course.  Organise and review the information you have on these theories/concepts so you understand them.
• Practice reading case studies and identifying relevant information. It's probably useful to practice doing this with a time limit as you will have one in your exam.
• Practice relating concepts and theories to real-world situations: ask lecturers and check textbooks for practice examples. It is also worth checking past exams for your course to see if there are examples of case study questions.

During the exam

• Take time to plan: Have a clear idea of how much time you have to answer the question. Then plan to spend some time reading the exam question, the case study and planning your answer. Take time to make sure you have understood the case study and know what the exam question is asking you to do:
• Read the exam question(s)
• Then skim read the case study to get the general idea. Highlight or underline key points
• Reread the question to make sure you understand it and to focus your attention when you reread the case study.
• Reread the case study carefully. Make a note of any ideas that you think of.
• Answer the question linking relevant theories and concepts to specific information from the case study. Usually you will need to write your answers in clearly formed paragraphs which have a clear topic that is well-supported with evidence and examples.
• Instead of simply describing or restating information from the case itself, use specific details or examples to support the points you are trying to make. This is where you link theory to the facts from the case study.
• << Previous: Answering multi-choice and short answer questions
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How to Answer Case Study: few tips

Here are a few tips on how to answer questions relating to case studies;

1)Read the case-study carefully: Case-studies will run up to many lines. So, do not think twice about spending time on reading the question. Read it the second time if [o haven’t understood clearly.

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2)Read the questions relating to the case: After a first time reading of the case study, reading the questions pertaining to it, will help you know what to look out for in the case. Underline these instances in the case study for later reference.

3)Make notes of key points: While reading through your case study, make notes of key points (in bullet format).

This will help you to assess and analyses the facts for arriving at the right solution.

4)Look for cues: Sometimes, the answer may be hidden in the question itself. Certain Norms, or conjunctions in the sentence will give away the answer, if you read between them. Remember to look for these cues.

5)Background preparation: attempting case studies questions will be easier if you have enough exposure to solving these question types earlier.

Browse through detent portals or your university online interface to get better insights about case studies, and the mode to solve them.

Case studies are a vital part of testing management expertise and are woven into the distance learning MBA programs, which follow industry-standards. With the above tips, you can practice such type of questions with a new approach and get the expected results. Identification of issues ; problems There are three steps involved in the identification and analysis of issues and problems.

What are The Steps of Writing Content Analysis Case Study ?

Step 1 – overview of the case study (background context)

Understanding the background issues helps to understand the context of the case study. Read the case study to gain an overview and ask and answer the following questions as you read.

* What background facts influence the current problems? * What are the constraints or obstacles of the situation?

Step 2 – identifying the problems Identifying the major problems and their causes at this stage is vital to identify appropriate solutions later. Re-read the case study and summaries or list the issues and / or problems in your own words.

Make sure you: * sort he major problems from the minor problems * identify evidence from the case study which relates to each of the problems * identify underlying causes of the problems. A setup strategy is to represent the problems and their relationships as a mind.

Step 3 – linking theory to problems and case evidence Relating the identified issues / or problems to theory is vital when answering case studies.

This is where you demonstrate your knowledge of the theory in your course and your ability to relate it to practical situations.

If you are afraid to be expelled or think that you will not pass the plagiarism of your work, then it is better to ask for help in writing the case study with us.

Use your readings to select appropriate theories to match the identified problems. * Home * Identifying issues * Solutions * Recommendations I Antispasmodics can be a useful strategy to summaries / organism problems and to show their relationships to each other. The example below is a representation of the problems of the management case study.

Example I * Home * Identifying issues * Solutions * Recommendations I Integrating theory in a case strangulating relevant theory into your case study answer is vital. His allows you to demonstrate how theory relates to the actual issues / problems mound in the case study, as well as demonstrate your understanding of your course content. The following example shows how the theory and issues have been woven together. Example I * Home * Identifying issues * Solutions * Recommendations I Solution’s section evaluates potential solutions for the identified key problems. Often there is more than one solution, so it is useful to evaluate each solution in terms of its advantages and disadvantages.

This will also assist in determining your recommendations.

Things that may need to be considered are: * costs * time * sources * expertise. Structures section should be clear and concise. Recommended structure: * use headings and subheadings where possible * bullet points or numbered lists can also be used to list the advantages and disadvantages. Example I Recommendation’s section should outline your recommendations based upon the given solutions for each of the identified problems.

It may also need to include an action plan, egg what should be done by whom and the associated timeliness, but check with your teacher / lecturer for specific requirements.

Each recommendation would be realistic, ‘e practical and achievable, and be linked back to relevant and supporting theory. Structuralizes and subheadings should be used in this section. For example:communication * Staff constitutionalism the recommendations based on the identified solutions and supported by relevant theory. * Staff meetinghouse the recommendations based on the identified solutions and supported by relevant theory.

Leadership * Team bloodletting the theory. * Participative leadership storyline the recommendations based on the Identified solutions and supported by relevant theory. I

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9 Types of Questions in Actual Case Interviews

Case interviews at management consulting firms are among the most difficult job interviews, but they are also quite predictable. Once you know the types of questions they ask, preparation is straightforward.

Using years of experience at McKinsey, as well as field reports from thousands of candidates, I’ve crafted a list of 8 common case interview questions, and in this article, I’ll show you how to answer each of them.

Case interview questions – Overview

Types of case interview questions .

Most questions in case interviews belong to one of these 9 types:

1. Framework/issue tree questions 2. Market-sizing and guesstimate questions 3. Valuation questions 4. Brain teaser questions 5. Chart insight questions 6. Value proposition questions 7. Information questions 8. Math problems 9. Solution-finding questions

In this article, we’ll discuss how to answer each question, along with the necessary tips and tricks.

How to answer case interview questions

There are the fo ur basic steps to answer case interview questions:

• Step 1: Clarify any unclear points in the question
• Step 2: Announce approach and ask for time
• Step 3: Draw issue trees to solve the given problem
• Step 4: Pitch your answer and end with a takeaway conclusion.

This general outline may vary depending on each type and each question – for example, brain teasers or information questions need only the last step, while market-sizing and framework questions need all four steps to deliver the perfect answer.

Type 1 – Framework/Issue tree questions

These are on top of the list among popular case interview questions!

If the interviewer asks you to identify factors contributing to a problem or to break down an entity (such as the revenue of a business), he/she is telling you to draw an issue tree.

And to draw a spot-on issue tree, you need to master consulting problem-solving foundations , the MECE principle , and common consulting frameworks . You should check out our other articles on these topics before moving on, because mastering the issue tree is the key to acing every possible case interview.

You also need good business intuition to draw good issue trees, so that’s all the more reason to start reading every day.

Gastronomia – a gourmet restaurant chain has found the turnover rate among its highly-skilled chefs increasing dramatically for the last 3 years; this has led to a noticeable decline in food quality and increased training costs, among other negative effects.

Which factors would you consider when tackling this turnover problem?

Job: Factors from the job itself. Further divided into 3 sub-branches

• Compensations: are the salaries, bonuses, and benefits attractive enough?
• Difficulty: is the job too difficult?
• Nature: is the job too boring, too unengaging, too repetitive…?

Company: Factors from the work environment within the restaurant chain, surrounding the affected jobs. Further divided into 2 sub-branches

• Cultural environment: is the culture at Gastronomia compatible with the chefs?
• Physical environment: is the physical working environment at Gastronomia safe, comfortable, convenient…?

Competitors: Factors from outside the restaurant chain, related to competing job offers. Further divided into 2 sub-branches.

• Inside industry: are other restaurant chains competing with Gastronomia for skilled personnel?
• Outside industry: are there new career options or changes in existing alternatives that draw chefs away from restaurant chains like Gastronomia?

For detailed guides on issue trees, frameworks and their principles, see the articles on Issue Trees , Case Interview Frameworks, and MECE Principle

Type 2 – Market-sizing & guesstimate

These questions go along the lines of “How many trees are there in Central Park?” or “What’s the market size of pick-up trucks in the USA?”

The key to nailing market-sizing and guesstimate questions lies in not the closest results, but the most logical and structured approaches. In fact, the interviewer expects you to follow these four steps:

Step 1: Clarify: Make sure you and the interviewer are on the same page regarding every detail and terminology, so you won’t be answering the wrong question.

Step 2: Break down the problem: Break the item in the question (number of trees in Central Park, market size of pickup trucks) down into smaller, easy-to-estimate pieces.

Step 3: Solve each piece: Estimate each small piece one at a time; each estimation should be backed by facts, figures, or at least observations.

Step 4: Consolidate the pieces: Combine the previous estimations to arrive at a final result; be quick with the math, but don’t rush it if you aren’t confident.

Unless you come up with something about 10 times the reasonable estimate, don’t worry about being “wrong” – the interviewer is unlikely to have a “correct” number in mind, he/she just wants to see your structured mindset.

This question type is so common, we devote a whole article to it, and our Case Interview End-to-End Secrets Program have a separate package on these questions. Check out our comprehensive guide on Market-Sizing & Guesstimate Questions for more details!

Now, here’s a quick example for you to try and get used to this type:

How many smartphones are sold each year, globally?

• Smartphones are phones using exclusively touch-screens.
• “Sold” means sold to the end-consumers. 
• The market size is calculated at present.

Break down the problem:

The global smartphone market can be divided into three segments – developed countries, developing countries, and undeveloped countries.

In each segment, the annual unit sales of smartphones depend on four variables:

• The percentage of “phone-owning age” people among the population
• The percentage of smartphone owners within the “phone-owning age” group.
• The average, annual, per capita “consumption” of smartphones for those owners.

Solve each piece:

• The population is 1.5 billion in developed countries, 5.5 billion in developing countries, and 1 billion in undeveloped countries.
• 80% of the world population is in the “phone-owning age” (Global life expectancy is 70 and everyone older than 15 years counts towards the “phone-owning age” group)
• 100% of the phone-owning age in developed countries will own a smartphone; the figure in developing countries is 75%, while in undeveloped countries it’s 10%.
• The average smartphone user replaces their phone every 3 years – so they “consume” 0.33 phones each year.

=> Estimated global smartphone market: 1.53 billion units per year

=> Actual 2019 global smartphone sales:  1.37 billion units (error margin: 11.7%).

This market-sizing question is solved using a four-step process, which is explained in this article:  Market-Sizing & Guesstimate Questions

Type 3 – Valuation questions

Valuation questions are about estimating the monetary value of a business, and these are very popular in case interviews too!

Valuation questions are a blend of guesstimation/market-sizing, math, and business. They also require basic finance knowledge. There are three ways to estimate the value of a business:

• The NPV Method: take the net cash flow generated by the business, and discount it to the present to account for time value of money. Basically “this company is worth X dollars because it gives me Y dollars over Z years”. This approach works best when the cash flow from the business is positive and stable.
• The Market Method: take one index of the firm (which can be stocks or anything depending on the industry) and multiply it with an industry multiple (the value of one unit of the said index). In other words, “this company is worth AxB dollars because it has A traffic and each traffic is worth B dollars”. This approach works best when the market is transparent and data on similar firms are accessible – usually with major, established industries such as commercial airlines.

In real case interviews, you have to justify your approach then ask the interviewer to give you the necessary data.

Our client wants to sell his organic-food restaurant (called “Cato’s Cabbage Farm”) to retire. How much is his restaurant worth?

(Supposed the interviewer gives you the following data: his current income from the restaurant is $100,000 per year; two other restaurants in the neighborhood – one with 2 times more customers, and another about 0.75 times, have been sold at $1,800,000 and $1,000,000 respectively).

NPV Method: Cato’s Cabbage Farm value = $100,000 / 10% = $1,000,000

Market Method:

Assume the number of customers for Cato’s Cabbage Farm is 1 “customer unit”, then the two neighborhood restaurants get 2 and 0.75 “customer units”.

• Industry multiple: ($1,800,000+$1,000,000) / (2+0.75) = ~$1,018,182
• Cato’s Cabbage Farm value = $1,018,182 x 1 = $1,018,182

Type 4 – Brain teasers

Brain teasers are the least predictable case interview questions – but even these can be learned!

Brain teasers are riddles designed to test unconventional, creative, and logical thinking. A famous example of this is Accenture’s “How do you put a giraffe in a fridge?”.

Although not as popular as before, brain teasers might still appear in consulting interviews; therefore, you should spend some time to prepare.

Most brain teasers can be allocated into these seven types:

• Logical questions are pure logic riddles – there’s no trick, no illusion, no creativity.

In our Case Interview End-to-End Secrets Program , there are +200 brain teasers to help you prepare for these “unpredictable” questions. You can also read our article about Case Interview Brain Teasers for insights on all of these exciting brain teasers, as well as 30 example questions and answers!

How do you put a giraffe in a fridge?

Open the fridge, put the giraffe in, then close the fridge. The question never says how big the fridge or the giraffe is.

For the logic and approach behind each kind of brain teasers, see the article on Brain Teasers.

Type 5 – Chart insight questions

You can’t be a management consultant without mastering the use of charts – the complex, scary-looking real-world charts such as those included in our Case Interview End-to-End Secrets Program.

In management consulting and case interviews, most charts are one (or a combination) of these four basic types:

• Bar charts compare the values of several items at one point in time, or 1-2 items at several time intervals.
• Line charts illustrate time-series data, i.e trends in data over a continuous period.
• Pie charts illustrate proportions, i.e “parts of a whole” analyses.
• Scatter-plots use data points to visualize how two variables relate to each other.

To read these charts and answer chart-insights questions effectively, you must follow a structured, comprehensive process:

You can find a more detailed guide in the Charts section in our article about Consulting Math.

What can you draw from the following chart?

Trends in chart:

• Steady rise in the number of confirmed deaths to about 70-80 per million;
• Both changes started around March 10-11.
• These sudden rises can be explained by events occurring in early-March, and 2.
• If number of cases is kept low, the threat from COVID-19 will remain minimal, considering a mortality rate of only 2%.

Type 6 – Value proposition questions

No business or consulting candidate can succeed without understanding the customers!

Value-proposition questions are not only about correctly identifying customer preferences, but also about analyzing and delivering the answer in a structured fashion. The former relies heavily on business knowledge and intuition, but the latter can be trained methodically and quickly. Personally, I use a “double issue-tree” – essentially a table with customer segments on one axis and proposed values on the other:

For segmenting customers, you can use the following table. However, don’t over-rely on it, since there may be more relevant and insightful question-specific segmentations.

In some cases, clarification is also necessary – both to avoid “answering the wrong question” and to narrow down the range of customers/values you need to cover in the answer.

What will a customer consider when buying a Toyota sedan?

Clarification: A sedan must be branded “Toyota” to be a Toyota sedan – cars with other Toyota-owned brands such as Lexus or Ranz do not count in this question.

Situational Assessment:

Toyota sedans occupy the entry-level and mid-range price segments, so Toyota customers will be more price-conscious than, for example, Lexus customers.

They are also less likely to lean considerably towards one particular factor, so achieving a balance is extremely important.

Functionality factors:

• Comfort: Toyota sedans are mostly for everyday use, so customers should feel comfortable being inside the car.
• Utility: Toyota sedans are used for multiple purposes, so convenience for a wide range of uses is important.

Cost factors

• Purchase price: A car can be an expensive investment while Toyota’s low-to-mid-range customers are more price-conscious, so having a cheap/reasonable price is important.
• Fuel and maintenance: Maintenance and fuel costs over time are likewise inversely related to the decision to buy a Toyota sedan.

Physical factors

• Performance: Customers are usually drivers themselves, who often pay attention to the technical characteristics of the car (speed, acceleration, handling, etc.)
• Visual design: The car should possess the same level of visual appeal as other competitors in the same segment.
• Build quality: Parts of the car should be assembled in a reasonably good manner.

Emotional factors

• Branding: The car should come from a well-known, reputable brand
• Personal preferences: Some customers choose specific cars simply because they “like” the car.

Type 7 – Information questions

In any problem-solving process, information is one of the overarching concerns!

“Information questions” essentially ask if the piece of data you use is obtainable in the first place. In real consulting work, data is not always available – client team members may refuse to cooperate or there’s simply no data on the subject.

There are many kinds of information sources in case interviews/consulting works, but I’ll divide them into primary and secondary sources. Primary sources means you must do the research yourself (or pay someone else to do it for you), such as customer surveys or mystery shoppings. If someone already did that research, and you use their results, it’s called a secondary source – you can get these from the client , the consulting firm you work for, or third-parties such as market research firms or external industry experts.

You can find out more about these sources and how to cite them in real case interviews through this free Prospective Candidate Starter Pack, which contains a glossary of data sources in consulting.

Our Prospective Candidate Starter Pack has a sheet containing all the possible sources of information in case interviews and consulting projects, among numerous other free resources; you can download and use it to answer these questions, by subscribing to our newsletter at the end of this article.

How do you assess your target customer’s preferences for sports cars?

Primary sources: customer survey, customer interviews, Secondary sources: industry reports, client sales reports, third-party expert interview, client expert interview

Type 8 – Math problems

A lot of information in case interviews and consulting work comes in the quantitative form, so you won’t escape Math by joining the consulting industry!

When you have to do the math, perform back-of-the-envelope calculations in a structured fashion, and say out loud what you’re writing. For one thing, it’s safe; for another, you show that you’re careful, organized, and reliable – just like actual consultants.

We have a Math Practice Tool right here! Use it every day, and you’ll be a master of mental calculations in no time flat!

We have a dedicated article on Consulting Math, which you should definitely read.

Type 9 – Solution-finding questions

What’s the point of analyzing a problem, if not to solve it?!

When dealing with solution questions, keep these four points in mind:

• Firstly, in case interviews as well as real consulting projects, solutions must always solve every root cause of a problem, so remember to check if your solutions are relevant and comprehensive.
• Secondly, every solution must be actionable – if your solutions are too expensive, too time-consuming, etc. for the client, they’re useless.
• Thirdly, the interview expects a highly-structured answer; so segment your solutions based on their characteristics (long-term vs short-term is the easiest segmentation)

Last but not least, deliver at least two solutions, preferably three to five. Otherwise, you’ll appear uncreative and lazy to the interviewer’s eyes.

Nailing these questions relies on having excellent business intuition; our Case Interview End-to-End Program has a dedicated Business Intuition package, but you should also train a habit of reading consulting and business articles daily, to sharpen your business mind.

A restaurant that relies solely on on-premise dining found the loss of adjacent parking space (due to termination of contract) harming their revenue. How can they fix that?

The solutions for the restaurant’s parking space problem can be divided into two types:

• Short-term solutions: Find new parking space around the neighborhood, or renegotiate for old parking space (possibly at a higher price).
• Long-term solutions: Introduce takeaway items and off-premise dining.

Reminders on case interview questions

The questions are not clear-cut in candidate-led cases.

There are two extremes in consulting case interview format: interviewer-led (McKinsey) and candidate-led (BCG, Bain).

Interviewer-led cases, on one hand, consist of multiple, clear-cut questions in a larger business case context; the candidate navigates through these questions to arrive at the solutions.

Candidate-led cases, on the other hand, have one big problem, which the candidate must break down into small pieces to identify the root causes and deliver solutions.

This list, therefore, is much more relevant to the interviewer-led format; nonetheless, this guide is still quite beneficial for candidate-led cases, because when solving that big problem, you’ll have to tackle small issues similar to the 8 aforementioned question types.

Mastering the fundamentals is crucial to consistent performance

Although it’s good to study the case interview questions, it is no substitute for mastering the fundamental principles.

Learning the exercises without the basics is like building a house without a foundation. My poor neighbor’s house developed a huge crack right down the center because of its weak foundation, so make sure to build your case interview prep a strong one by knowing the basics first.

Once you’ve mastered the fundamentals, you’ll become much more flexible – this quality is getting increasingly important because case interviews are getting less predictable, and more realistic.

If you haven’t, I advise you to read these articles (especially the first 4) before practicing the question types:

• Case Interview 101
• Issue Tree – The Complete Guide
• MECE Principle
• Case Interview Frameworks
• McKinsey Case Interview – Interviewer-led Format
• BCG & Bain Case Interview – Candidate-led Format

Expect the unexpected

If you study those nine question types, rest assured that you’ve covered the majority of questions in case interviews.

However, these are not all the possible questions you might be given. In actual cases, there are always questions that cannot be categorized neatly. If you do not prepare for these questions, it’s easy to be thrown off-balance.

So, how do you prepare for “the unexpected”?

• Master the basics: Focus your efforts on the basics, once you’ve mastered them it’d be comfortable to move on to higher, more sophisticated levels.
• Business Intuition : You need business intuition for a business-related job, it’s simple as that. Nearly every case concerns business in one way or another – even public sector cases. This is why we also teach business intuition in our Case Interview E2E Secret Program.
• Have mock case interviews : Practice case interviews with ex-consultants will help you get a sense of what might happen or how you might be evaluated in actual cases. Highly experienced coaches from MConsultingPrep will review your performance, giving you the most valuable feedback and actionable tips & techniques.

Scoring in the McKinsey PSG/Digital Assessment

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Six types of charts in case interview are: Bar/Column chart, Line chart, Percentage chart, Mekko chart, Scatter plot chart, Waterfall chart.

A case interview is where candidates is asked to solve a business problem. They are used by consulting firms to evaluate problem-solving skill & soft skills

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What are the most common case study interview questions at McKinsey, BCG and Bain?

If you’re preparing to interview at a top management consulting firm like McKinsey, BCG or Bain (MBB), you might be wondering what kind of questions you can expect to receive in your case interviews .

In this article we take a look at the most common types of case questions asked by interviewers at the world’s top-3 consulting firms. We also consider how you can develop the skill of structuring answers to case questions.

The 10 most common case interview questions

To identify the most common case interview questions posed by interviewers at McKinsey, BCG and Bain, we surveyed CaseCoach users who interviewed at one of the firms for a generalist role in 2023. We found that 90% of the 260+ case interviews reported by respondents fell into one of 10 question types:

The respondents in our study all interviewed for generalist consulting positions at McKinsey, BCG and Bain. It’s no coincidence that the case interview questions that they were asked align to the typical challenges and opportunities faced by CEOs.

However, it’s important to bear in mind that this is not an exhaustive list. If you’re interviewing for a practice-focused role on the firms’ expert career track you may be given cases that focus on your area of specialization, rather than the topics in our list.

Your target firm and location may also have a bearing on the type of cases you are given. This is because MBB offices tend to use the work they have done for clients to develop their case questions for candidates.

Knowing the frameworks that correspond to these questions is critical

As a management consulting candidate, it’s vital that you have an understanding of the issues behind the most common case questions and know the frameworks for tackling them inside out.

In our Case Interview Prep Course, included in our Consulting Interview Prep Toolkit , we provide detailed examples of how to structure these questions at the beginning of a case interview. We also explain how different circumstances should influence your approach.

You can learn more about structuring frameworks for specific types of cases in our articles on mastering profitability questions , answering revenue growth questions and nailing market sizing question s.

You can also find examples of the following types of cases in our Case Library :

• Profit improvement
• Market entry
• Mergers and acquisitions
• Response to a competitive threat

If you’re not a CaseCoach subscriber, you can gain access to these examples by signing up for a free account.

You must be able to create custom approaches to answering case study interview questions

When it comes to answering a case question effectively, applying a framework in a ‘cookie-cutter’ fashion simply won’t allow you to give the best possible answer or impress your interviewer with your structuring skills.

In fact, respondents in our survey reported that many of the cases they received could be assigned to several case types and could not be solved by applying an off-the-shelf framework. A profitability question may have a focus on market growth or launching a product, for example. To structure a response to this kind of question, candidates need to combine several frameworks and use them as building blocks for creating their answer.

Even common questions require a custom approach: a profitability question that relates to a chain of restaurants, for example, will naturally require a different approach to a question on the same topic in the manufacturing industry.

Interviewers want to understand how your mind works and to see you think on your feet. Increasingly, they are using non-traditional cases (such as those set in the public sector) to test this. Ten percent of the respondents in our survey couldn’t assign the questions they had faced to a particular case type, suggesting that they were given an unusual problem to solve.

As a candidate, you’ll need to demonstrate that you are capable of proposing a custom structure to any case question, rather than simply relying on a framework.

What does a good custom structure look like?

An effective structure should focus on the right question and then break it down into an exhaustive set of independent drivers. The structure should also provide an approach to solving the case and supply helpful insights. In other words, it should pass ‘the AIM test’:

• Answer-focused: a strong case structure will be focused on the right question and will provide an approach to solving the case.
• Insightful: the structure should be tailored to the specific situation posed by the case question and should provide helpful insights.
• MECE: this stands for ‘mutually exclusive and collectively exhaustive’. A good MECE structure will break the question down into an exhaustive set of independent drivers that neither overlap nor omit anything important.

You should use the AIM test as a guide for structuring your answers to case questions. If your structure meets all the criteria, it should provide a strong foundation upon which to solve the case. You can learn more in our article on case structuring and how to do it effectively .

Structuring skills take time and practice to develop

Building the muscle required to structure answers to a wide range of case questions, combine frameworks and develop your own approach to solving non-traditional cases takes a great deal of preparation.

First, you need to build an inventory of frameworks that you can use as building blocks to develop custom structures. You can do this by watching the structuring classes in the Case Interview Prep Course, included in our Consulting Interview Prep Toolkit , which covers topics such as the AIM test, business and academic frameworks, and using logical approaches to craft bespoke structures for unusual cases.

You then need to gain exposure to a variety of cases. You can choose from the 100+ questions in our Case Library and then schedule a practice session with a partner from our diverse community of top candidates in our Practice Room .

Structuring is one of the case interview skills you can practice alone in addition to practicing with a partner. Our Consulting Interview Prep Toolkit includes 60+ structuring drills – which provide multiple solutions to each problem – to help you do this.

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Case Study Video Samples with Answers

Case interview frameworks: explained.

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Case Study Samples: Video Examples With Answers

Looking for sample case study interviews with answers? Look no further! In this article, we're walking you through 20 of the best case study samples on the web . These case studies represent cases across firm styles (McKinsey, Bain, BCG, Deloitte, & more), including interviewer-led and interviewee-led (candidate-led) cases.

The video examples demonstrate the nuances of the virtual case interview and include feedback from an MBB coach. The sessions feature consultants or consulting candidates. If you are currently preparing for case interviews , or simply want to watch some rockstars run through sample case study interviews, grab a pen and paper and work alongside with us. You won't find FREE case practice like this anywhere else!

Important Note : Watching others case is only beneficial in the early stages of prep - as soon as you can, move into live practice with a partner. Need practice partners ? Join Black Belt - this case prep program not includes 8 hours of live coaching with a former MBB consultant, but access to an incredible community of aspiring consultants to practice with .

Now, let's dive into the case study samples.

Bain: Market Sizing Case Study Sample

• CASE NAME : Lamp Market in Mexico
• CASE TYPE : Market Sizing
• FIRM STYLE : Bain
• CANDIDATE PERFORMANCE : 3/4

Breaking Down the Candidate's Performance

This Bain case study sample features a large direct-to-consumer conglomerate that sells lamps and other small home furniture pieces in the United States. The company is looking to expand into the Mexican market, particularly with their lamp segment. The candidate's job is to size the market for lamps sold each year in Mexico.

The candidate asks a few clarifying question before and after building out a structure for the case. It's always smart to ask questions to clarify assumptions. The basic structure the candidate created looks like this: Population > Households X Lamps / Household > Spend / Lamp. One thing he missed was converting his market size into a per-year (or annualized) figure. In most cases, the per-year basis is standard. If you are unsure, ask a clarifying question!

Overall, it was a good performance, with a final score of 3/4.

McKinsey: Market Study Case Study Sample (Interviewer-Led)

• CASE NAME : Iced Coffee
• CASE TYPE : Market Study
• FIRM STYLE : McKinsey
• CANDIDATE PERFORMANCE : 4/4

The client in this case is a beverage producer in the U.S. that wants help in designing a product launch strategy. The candidate's job is to analyze the factors surrounding the product launch and the company's internal capabilities to support the launch.

The candidate brought strong level 2 insights that McKinsey is looking for in its future consultants. Also, take note of how the interview was structured, with the interviewer taking the lead in presenting the information and driving the case. This interviewer-led style is typical in McKinsey case interviews. In the conclusion, the candidate led with the recommendation first ("here is what I recommend you do"), and followed that up with supporting data. McKinsey loves this answer-first (or hypothesis-driven) style of communication, derived from the Pyramid Principle . The candidate gets a score of 4/4 in this case study sample.

BCG: Profitability Framework Case Study Sample

• CASE NAME : Furnazon
• CASE TYPE : Profitability
• FIRM STYLE : BCG
• CANDIDATE PERFORMANCE : 2/4

In this BCG case study sample, the client is a B2B and B2C housewares and home furnishings retailer. In order to combat a recent slowdown in growth, the company implemented aggressive price promotions. However, profitability has continued to decline. The candidate's job is to analyze the promotional campaign and determine what can be done to increase its effectiveness.

The candidate in this case study sample had what we call the "game factor." He was eager and excited to tackle any challenge, and that positive attitude is what interviewers are looking for, especially in the second round of case interviews. He also showed that he wasn't afraid of the math portion of the case. What was missing from his performance was insights. Ultimately, consultants are hired because of the insights they provide - not to crunch numbers, or use frameworks, but to provide recommendations built on insights. Because of that, this performance gets a score of 2/4.

Deloitte: Market Study Case Study Sample

• CASE NAME : Chainsaw Pants
• FIRM STYLE : Deloitte

The client in this Deloitte case study is a uniform producer in Australia. The company is looking to expand with a new product. The candidate's job is to look at the market for the product to determine if it is a good opportunity for growth.

The candidate nailed the likeability factor that is always important in Deloitte interviews. Where she fell short was in communication, both in verbalizing her structure, numbering the buckets in the structure, and doing the math out-loud. We can't emphasize this enough: you must over-communicate in any virtual interview setting - there is no such thing as communicating too much!

Bain: Market Study - Market Growth - Case Study Sample (with Diagrams)

• CASE NAME : Candy Company

The client in the Bain case study sample is a candy company that is looking to double revenues - while maintaining margins - in 4 years. The candidate's role is to help the company create a short-term strategy to accomplish the goals of the CEO.

The candidate - who already landed an offer at Bain - absolutely crushed this case. Take note! From his opening statement ("this looks like a sweet case!") to his final recommendation (42:25), he conveyed a sense of confidence in himself. This is crucial in case interviews. The case provides an example of how to interpret math diagrams - skip to 20:47 for that. We're giving this one an overall rating of 4/4.

BCG: Profitability Case Study Sample (with ex-Bridgespan Consultant)

• CASE NAME : Needle Needer

In this case study, the candidate's job is to help a medical device manufacturer maintain profits despite new regulations causing a negative shift in demand.

The candidate does well in opening the case and asking clarifying questions to simplify the problem. Where he fell flat was in the structure - both in the communication of the framework, and in the actual strength of the structure that he created. Especially for BCG cases, the firm is looking for your structure to be robust because you're going to have to follow it more, so make sure to allow yourself enough time to build a strong structure. We're giving this case study sample a score of 3/4.

McKinsey: Mergers and Acquisitions Case Study Sample

• CASE NAME : Margaritaville
• CASE TYPE : Mergers & Acquisitions

In this back-of-the-envelope Mergers & Acquisitions case study sample, the business situation in the case involves a restaurant chain (Margaritaville). The candidate is being asked to analyze the chain as a potential investment to a PE firm. Is the restaurant chain worth acquiring?

The case is a good reminder to stay on track when it comes to timing. The ideal time in a case interview is 2 minutes to create a structure, and 2 minutes to present it. The candidate took 5.5 minutes to present! Not only did this eat into her time, it also make it hard to get into a comfortable rhythm as she continued into the rest of the case. The biggest weakness for our candidate was the creative question. Jenny Rae (the interviewer) recommended that she make that the focal point in her practice for future cases. There's a lot of really good learnings in the feedback, so make sure you watch this one to the end. The candidate gets an overall score of 2/4.

BCG: Market Study - Market Entry - Case Study Sample

• CASE NAME : Pakistani Car Market

The client in this case study sample is a German luxury car maker that is looking to enter the Pakistani market. There is 1 luxury car competitor in the country. The client wants to break even in 2 years if it enters the market. The candidate's job is to gather the data needed to inform her go/no-go recommendation to the client.

Right off the bat, the candidate did not gain the confidence of the interviewer when she commented, "I'm not a car person." In case study interviews, that's a no-no. Even if you don't know anything about the subject matter in the case, refrain from negative statements like that. Firms are asking, "can I see this person interacting with a Fortune 500 CEO on a consulting engagement?" In addition, the candidate used the issue tree in her structure, which created confusion en masse. Issue trees are effective in an in-person interview, but in a virtual environment, irrelevant at best, and confusing at worst. In virtual interviews , the interviewer relies heavily on you over-communicating your structure, and that includes numbering. Every bucket/category in your structure needs a number that is clearly communicated. Overall, this case gets a score of 3/4.

McKinsey: Market Sizing Case Study Sample

• CASE NAME : Disposable Diapers

In this McKinsey Market Sizing case study sample, the candidate is being asked to size the market for disposable diapers in China.

Overall, this was a fantastic performance by the candidate. Given that she is ex-McKinsey, that shouldn't be too surprising! She did a great job giving the interviewer confidence that she'd be able to crush the case. Her structure was clear and linear. One 'good to great' pointer: she could have simplified her math by rounding at several different points. Overall, this gets a 4/4.

McKinsey: Revenue Growth Case Study Sample

• CASE NAME : Mango Maker

The client in this case is an agricultural chemicals producer in North America that is looking to grow revenues through the introduction of a new product in Mexico.

The candidate's performance was good enough to pass a first round at McKinsey, but there were different areas with room for growth to go from a "B" performance to an "A."

Deloitte: Public Sector Case Study Sample

• CASE NAME : Texas Unemployment Bump
• CASE TYPE : Public Sector

Deloitte: Human Capital Case Study Sample

• CASE NAME : Corporate Training Decision
• CASE TYPE : Human Capital Case Study

PwC: Profitability Market Share Case Study Sample

• CASE NAME : Bubble Bottles
• CASE TYPE : Profitability Case Study
• FIRM STYLE : PwC

BCG Finance Case Interview

• CASE NAME : SimpleSwipe

BCG Profitability Case: Revolutionary Internet

• CASE NAME : Revolutionary Internet

McKinsey Case Interview: College Football Program

• CASE NAME : College Football Program

BCG Technology Case Study: Electronics Retailers

• CASE NAME : Electronics Retailers

McKinsey Case Study: Hospital Chain Revenue

• CASE NAME : K Grace Hospital Chain

Bain M&A Case: HardHead Helmets

• CASE NAME : HardHead Helmets
• CASE TYPE : M&A

McKinsey Market Entry Case: EnergyPop

• CASE NAME : EnergyPop
• CASE TYPE : Market Entry

Market Sizing Framework

Market sizing case studies allow a business to know if a particular market would be appropriate to expand into. The capital expenditure required to expand into a new market is high, and exposes the company to a lot of risk. Therefore, extensive work by consultants to determine those risks and opportunities is an important step for companies to take. From a firm perspective, they want to know if you understand how to build a framework for this type of business problem, and appropriately defend your assumptions used to build your market sizing framework. If you're able to do that, then you stand a good chance to do well in your case interview.

Market Study Framework

The Market Study framework is the most versatile of the basic frameworks. There are three types of Market Study framework questions.

• Market share ("How can the client grow market share?").
• Market growth ("How can the client increase revenues?").
• Market entry ("Will it be profitable for the client to enter the market?"). The framework looks at the external factors first - market, competitors, and customers. After looking at the external, it works its way to the internal factors - the company and the product/service.

It's important to focus on the financial impact when using the Market Study framework!

Profitability Framework

The Profitability Framework is the most important of the basic frameworks. Why? Without profits, businesses can't survive for long. There are 4 business situations in case study samples where the Profitability framework should be utilized.

• Growth Strategy : the client wants to grow significantly in a short period of time, meaning revenues, market share, profits, or a combination of the 3. How can you factor in any increased costs to grow both revenue and profits?
• Declining Profits : in this scenario, the client wants to not only stop the profit decline, but reverse it and get the business going in the right direction. Your job is to get to the root of the decline, and create a plan to reverse it.
• Creative Cost Benefit : in this business situation, the goal is often increased revenues or decreased costs. These types of case studies are often used for non-profits, because a non-profit's success is not determined by profitability.
• Weighing Scenarios : the client is deciding between several options and needs your analytical skills and insight to guide them to a decision.

When using the Profitability Framework, it will serve you well to keep the ultimate goal in mind: profitability!

M&A Framework

The M&A Framework is the most complex of the frameworks, and also the most uncommon. It generally includes elements of the other basic frameworks, including Market Sizing, Profitability, and Market Study, with a fair amount of case math thrown in. The M&A Framework involves either a scenario where Company A wants to merge with Company B, or Company Y wants to acquire Company Z. There are 2 types of M&A buyers:

Understanding the differences will allow you to determine how to approach the case. And don't forget: the goal in any M&A case is always increased profitability.

We hope these case study samples prove to be useful in your interview prep ! For expert guidance in your case preparation, join our Black Belt program to work with an ex-MBB coach today. Need practice case studies like the ones you saw in the video samples? Black Belt includes access to our Case Library - a bank of 600+ practice case studies, with 25+ firm styles represented (McKinsey, Bain, BCG, Deloitte, Accenture, and many more!). Good luck in your case prep, and reach out to our team with any questions or comments!

Additional Reading:

• Case Interview Frameworks: Ultimate Guide
• Case Interview Examples: Master List
• Virtual Case Interview
• Case Interview: Complete Prep Guide
• No Case Interview Experience? Start Here
• 6 Types of Case Interviews: Why You Need to Know Each One

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How to answer case study questions.

A case study examination is composed of a set of questions surrounding a single problem, person, place or thing. Each problem attacks different angles of the subject matter to determine if the examinee comprehends the particular problem(s) and can solve them. Case study examinations can be used in business, technology, medicine, psychology, advertising, law, consulting and science. The questions are ideal for testing the knowledge of an individual who must prove his grasp of the subject matter in a particular field, i.e., the legal professional.

A week or two before the case study, locate a practice test and run through it a few times on your own. The more acquainted you are with the word arrangement of this type of test, the more comfortable you will be during either a written or oral case study assessment.

On the day of the case study test, relax and allow yourself to remember what you have learned from previous readings on the subject. You should possess a wealth of knowledge in this area from classes you have taken or work experience. Just use what you already know to answer the questions.

To answer questions on a case study examination in the best possible way, read or listen for the topic sentence. This is usually the first sentence in the introduction or first paragraph. This sentence presents the problem and thus holds key information; it tells you what the problem is about. Make sure that you understand the topic before reading the case study.

Next, read or focus on the meaning of the entire study question to become familiar with the nature and scope of the problem. Go over it again more slowly, a second time, if you do not understand it during the first read. Do not skip, skim or gloss over the content. Otherwise, vital information that you will need to answer the question might be missed. Note word arrangement, facts, figures or statistics in the text that will help come up with a solution. Think of different ways that you can answer the case study question and then determine the effects of each answer on your outcome.

Visualize the scenario or situation posed by the question. See it in your mind's eye as you review it. Consider the question as if it were an actual problem that will affect the lives of others. Write the best possible answer.

Slow down if you start to get confused. You may be moving too fast, trying to beat the clock. If this is the case, answer the easiest questions first and come back to the harder ones later. This will buy you some time and hopefully boost your confidence enough for you to calm down and can answer the more difficult questions with less anxiety.

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Do's and don'ts for interviewing techniques & speaking habits →.

• Job Interview and Career Guide

Juanita King began writing in 1971. She holds a master's degree in written communication and a master's degree in human development with a post-master's degree in counseling from National-Louis University.

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How to Succeed in a Case Study Interview

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Instructor: Jena Viviano

You’ve nailed the first few rounds of interviews, and now you’ve been invited to participate in a case study interview. Curious about what this next stage of the process looks like? In this course, Jena Viviano breaks it down for you, explaining the basic components of a case study interview, how to prepare, and what to do to project confidence and engage your interviewer. Learn how case study interview questions are used and why employers find them beneficial. Discover the key elements that interviewers use to evaluate your answers. Plus, learn how to formulate key questions to dig deeper into the case, develop your own framework for every case study answer, and craft a conclusion with supporting rationale that’s concise and clear. Jena also provides tips for quelling your performance anxiety, as well as sample case study questions that give you a better understanding of what to expect.

Online Case Study Answer Generator for Students

Here Is Your Case Study Analysis

If you want to quickly and effectively carry out case study analyses, you’ve come to the right place. Just for you, we’ve created a free AI-powered tool that can analyze case studies on any subject!

Our app will be the perfect solution for those who don’t want to spend a ton of time structuring their texts and looking for examples. Use it to save time and nerves!

• ️🎉 Benefits of Our Generator
• ️🤖 How to Use
• ️✨ Case Study Definition
• ️🔎 Structure of a Case Study
• ️✍️ Writing Steps
• ️🔝 Top 12 Topics & Examples
• ️🔗 References

🎉 Benefits of Our Case Study Analysis Generator

Our generator is one of the best, and there are many reasons for us to say so:

🤖 How to Use Our Case Study Answer Generator

Getting a case study analysis has never been simpler—see for yourself!

• Paste your case study into the field.
• Add questions or issues you need to resolve in your analysis.
• Press “Analyze now.”
• Receive the results!

Keep in mind that the answers given by the tool are to be used for reference purposes only.

✨ Case Study Analysis Definition

A case study analysis aims to examine a problem and find a solution. It is traditionally used in business and other spheres, like education, healthcare, and social sciences. The main feature of such research is that it’s rooted in a real-world context.

Researchers use direct observations, interviews, tests, and samples to gather data for their case studies. This information is then applied to develop solutions and recommendations backed with evidence.

🔎 Structure of a Case Study Analysis

Usually, a case study analysis comprises 6 parts. Each one is dedicated to a certain aspect and serves its respective aim. Let’s go through them and see how they differ.

Introduction

An introduction defines the context of the examined topic and provides substantial background on the case study’s subject. When you write it, keep in mind the following questions:

• What is your case study about?
• What is the primary reason for your research?
• Why is it essential to conduct it?

Problem Statement

The next part introduces the central problem the study will be concentrating on. Typically, it’s concerned with a challenge faced by a person or organization in question. The problem statement provides a clear focus for the whole research.

Now, it’s time for the most gripping part—the analysis itself. When it comes to business problems, students can employ various approaches:

• SWOT analysis  evaluates the firm’s strengths, weaknesses, opportunities, and threats.
• Descriptive statistics recaps the main characteristics of the collected data using various measures.
• Identification of causes approach looks for the underlying reasons behind the issue.
• Stakeholder researches the perspectives of different stakeholders involved in the case.

This part proposes several ways to settle the issue in question. The solutions must be pragmatic and achievable. It’s also worth to mention their pros and cons and thus identify the most potent ones.

Recommendations

This part revolves around the best potential solution to the problem determined in the previous section. It explains how to execute it practically and how it will help eliminate the issue. It may also propose ways to deal with other minor dilemmas involved in the case.

Conclusions

Now, it’s time for the final section of the analysis: your  conclusions . Here is what to do:

• Restate the results of your case study analysis and elucidate how they relate to the research’s main problem.
• Be sure to underline how vital your study is and how it helps make the issue more controllable.
• Make further proposals based on your findings.

✍️ How to Write a Case Study

Now you know what to include in your case study. But how do you write one that is truly outstanding? Just follow our step-by-step guide:

1. Pick a Case to Explore

Choosing the right topic is essential. You need to do it early on to ensure that the research subject is sufficiently explored.

For example, suppose you want to examine how COVID-19 has affected the hospitality sector. In that case, you can choose either a representative case, such as a large hotel chain, or an outlier case, such as a small Bed and Breakfast that has managed to survive the pandemic. The latter case may sound more interesting, but if there’s not enough information available on it, it’s best to choose the former.

2. Formulate a Problem Statement

Now, you should clearly and concisely formulate the central problem you will be focusing on. To do it, answer the 5 Ws:

• What is the problem you’re researching?
• Who is affected by it?
• Where does it occur?
• When did the problem arise?
• Why is this issue significant?

If you need help with this part of your analysis, you can always use our research problem generator .

3. Gather Evidence & Collect Data

Data gathering can be done through both primary and secondary sources of information . You can use a range of research techniques, such as observations, surveys, and interviews. It is crucial to make sure the data you’ve collected is pertinent to the case study.

4. Describe Your Findings & Analyze Them

Next, you analyze trends and themes in your data. This analysis must be supported by facts and evidence. Use various analysis methods to make your study more in-depth.

5. Provide Solutions & Recommendations

Develop several possible solutions using the information you’ve gathered. Once you’ve done it, answer the following questions:

• What are the pros and cons of these solutions?
• Which one can be the most beneficial?
• How can the entity you’re analyzing implement it in practice?

The more detailed your recommendations are, the better. If possible, try to include aspects such as timeline, resource allocation, and KPIs for monitoring.

🔝 Top 12 Case Study Topics & Examples

Want inspiration for your analysis? Or maybe you need help picking a case to explore? Check out this list of topics with examples!

• Operations and Information Management: A Case Study of CC Music
• Netflix and Blockbuster: Case Study
• Strategic Planning Case Study: Process Management
• HRM Incident: Case Study Analysis
• Case Study Summary: Hiring a Sustainable Development Specialist
• Organizational Change: Qatargas Case Study
• Childhood Development Case Study
• Case Study of Engstrom Auto Mirror Plant and Workplace
• Strategic Marketing: Amazon Go Case Study
• Cognitive Behavioral Therapy: Case Study
• Social Determinants of Health: Case Study
• Recovering Supply Chain Operations: A Case Study of Nissan

Now you know how to complete a case study! Remember that the tiring process of analyzing can be effectively streamlined if you use our free case study answer generator. Try it out—you won’t regret it!

We also recommend using our transition words maker and personal statement generator to enhance your writing.

Updated: Sep 28th, 2024

🔗 References

• Case Study: Definition, Examples, Types, and How to Write: Verywell Mind
• What Is a Case Study?: Evidence Based Nursing
• What the Case Study Method Really Teaches: Harvard Business Review
• Using Case Studies to Teach: Boston University
• What Is a Case Study? Definition, Elements and 15 Examples: Indeed
• Writing a Case Study: University of Southern California
• Writing a Case Study – Student Academic Success: Monash University

Case Interviewing

What is a case interview.

The case interview is a scenario modeled after a real business or management problem. Candidates are asked to analyze a problem and provide a solution based on the information given. The majority of cases don’t have a specific answer that you are expected to give; instead, the interviewer is looking for you to demonstrate a problem-solving process that is both analytical and creative.

Who Uses This Style of Interviewing?

Many consulting firms use the case interview as part of their interview process. The case gives candidates a sense of the type of work that consultants do and allows the employer to test the candidate’s ability to analyze, present information, and perform under pressure. However, any employer who is looking for strong problem-solving and presentation skills can use case interviewing.

Skills Evaluated During a Case Interview

• Communication skills
• Analytical and reasoning skills
• Ability to organize and present information
• Ability to perform under pressure
• Understanding of basic business principles
• Creativity and resourcefulness

Types of case questions:

• Business case (most common).  A scenario to gauge the general business knowledge of candidates and how they can logically apply this knowledge. It could focus on different areas such as profit/loss, organizational structure, and marketing. Example: “An airline finds that, while its revenues are high, the company is still operating at a loss. What is going on?”
• Market-sizing/”Guesstimates.” Estimation questions that require the use of logical deduction and general statistical information to estimate some number or size. Example: “How many gas stations are there in the U.S.?” 
• Brainteasers.  Puzzles or logic questions used to gauge creativity, quantitative skills, and problem-solving skills. Example: “Why are manhole covers round?” 

How to Approach a Case Interview

• Listen to the case . Take notes and rephrase the question to make sure you’ve got all the information.
• Clarify the problem . Ask good questions to clarify and show your understanding of the problem.
• Analyze the problem . Pause and take time to think about how you will approach the problem. Silence is okay!
• Structure an answer . Write out your method for solving the problem. Use examples from in and outside the classroom to show insight.
• Share your answer . Talk through your approach using key points to guide you.
• Summarize your findings . Provide a conclusion that restates your main points.

How to prepare for a case interview

The best preparation for a case interview is to PRACTICE. The more cases you work through, the more comfortable you will become with the process.

Use this general timeline and the resources below to structure your practice:

As early as possible

• Read the case resources Case in Point and the Vault Guide to the Case Interview .
• Coordinate an informational interview with a Georgetown alum working in consulting. Use Hoya Gateway to get connected.
• Sign up for a mock interview to practice your behavioral interview skills (these are important too!).

Two weeks before an interview

• Review and practice cases with a friend.
• Attend an employer case workshop.
• Visit employer websites for each company’s tips and sample cases.

The day before the interview

• Review our tips below.
• Get enough sleep so that your mind will be sharp.
• Bring paper and pens to the interview.

Case Interview Tips

• Take notes.
• Remember, the case is a chance to demonstrate how you think – don’t be discouraged if you don’t know the industry well. Use your analytical and communication skills to show how you would break down the problem.
• Make sure you understand the problem you are being asked to analyze. Paraphrase back to the interviewer to make sure you heard them correctly.
• Ask questions and listen to the answers you get (don’t be discouraged by information that the interviewer doesn’t provide, that likely means it is not important).
• Take time to collect your thoughts (and ask for more time if you need it). Don’t be afraid of silence.
• Lay out a road map for your interviewer (your framework will help here).
• Think out loud to allow the interviewer to see your analytical skills.
• Present your thinking in a clear, logical manner.
• Summarize your recommendations and use examples from your classes, internships, or extra-curricular activities to provide insight beyond the case.
• Read industry magazines and journals (both general and specific).
• Familiarize yourself with some basic statistics, such as the population of the U.S.

There are several resources available both in the career center and online, which can help you prepare for case interviews.

Case Interviewing Guides

• Case In Point: Case Interview Preparation , 10th Edition, (Marc P. Cosentino, 2010)
• Case Interview Secrets  (Victor Cheng, 2012)
• Vault Career Guides  – career guides, employer profiles and rankings, and more. You must create an account with your Georgetown e-mail address to access Vault.
• Vault Guide to the Case Interview , 9th Edition

Sample Cases & Websites

• Management Consulting Case Interviews – hundreds of case interview questions organized by type, industry, and employer. Questions are available for free but solutions require a subscription.
• CaseInterview.com – Sign up for free access to case interview training videos, newsletters, and strategies for success from Victor Cheng, author of Case Interview Secrets .
• MConsulting Prep – Started by a former McKinsey consultant, this website has videos and coaching strategies for interview preparation.
• How to Ace the Case Consulting Interview webinar , Igor Khayet (F’06)
• Case Interview 101 – an introduction video from MConsulting Prep. 

Company Resources for Case Interview Preparation

• Accenture’s case interview workbook (PDF)
• Succeeding in Case Study Interviews : a blog post from an Accenture recruiter

Bain & Company

• Interview preparation tips and interactive case studies

BCG (Boston Consulting Group)

• Interview process and tips

Dean and Company

• Interview preparation
• “How to Crack a Case” presentation  (PDF)
• Interview tips
• Interactive cases

L.E.K. Consulting

• Interview preparation tips with sample cases and videos

McKinsey & Company

• Interview process, including videos, sample cases, and practice tests

Oliver Wyman

• Interview preparation and case interviews
• Interview preparation and process

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Office Hours

Structure your answers to case study questions during data science interviews, nail the data science interview with confidence, part 4.

Zijing Zhu, PhD

Towards Data Science

In my previous articles, I have talked about the interviews questions to prepare in machine learning, statistics, and probabilities:

20 Machine Learning Related Questions to Prepare for Interviews

Nail interviews with confidence.

towardsdatascience.com

22 Statistics Questions to Prepare for Data Science Interviews

Nail data science interviews with confidence, part 2, 12 probability practice questions for data science interviews, nail the data science interviews with confidence, part 3.

I will discuss behavioral questions in my next post:

Written by Zijing Zhu, PhD

Ph.D. in Economics | Data Scientist @Cisco | Top 1000 Writer in Medium| Lifetime Learner | https://www.linkedin.com/in/zijingzhu/

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