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The other type of common technology issue I have seen is technical troubleshooting.

Case Interview – The Ultimate Guide For Your Case Prep

This is really just root cause analysis. The problem that is visible is often just a highly visible symptom of an underlying problem that is hard to see.


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So an oversimplified example would be: you hit the "power" button on your television remote, but nothing happens, what do you do? In the manufacturing world, a similar case might be the production line's daily output has dropped from 1, units per day to units. You are called in to solve this problem. What do you do? If you think carefully about these two questions, they are actually the SAME case though it might not seem that way at first. The general approach, by the way, is to map out the process in steps, and measure performance at each step.

When you do this, you will often find that one step is broken not all the steps. So in the case of the remote control, you can start at the last step and work backwards, or start at the first step and move to the last. If you start at the first step, you would unplug the TV from the wall, plug in a lamp that you know has a working light bulb and see if the outlet has power. If it does, you know the problem is not the power.

Next you plug in the power strip into the outlet and plug the lamp into the power strip. If the lamp works, you know the problem is not the power strip. You keep doing this, working your way up to the remote control and putting in new batteries. I have done both, and the overall approach is the same. Again, this is just my best guess. I would recommend asking your recruiting coordinator what kinds of cases they give in the interviews you have coming up. If you found this post useful, I suggest becoming a registered member it's free to get access to the materials I used to pass 60 out of 61 case interviews , land 7 job offers, and end up working at McKinsey.

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Preparing for a Case Interview

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Identify your Case Type. Structure your Thoughts.

Practice your Basics. Math Skills Required in Case Interviews. Business Concepts. Useful Business Analysis Tools. Common Terms of Business. This approach will allow you to crack any type of case study Solving a case in a case interview is not very different from the approach a consultant uses in real life to solve clients' problems.

How to crack any case interview like a McKinsey, BCG or Bain consultant would

You will need to: Develop an exhaustive structure that will guide you throughout the case interview efficiently. The structure ideally will tell you where to look for the solution of the problem Develop a hypothesis early on and prioritize the information you need to gather. The Interviewer will likely provide verbal information or charts based on your questions. The foundation for a successful case is set at the beginning so follow these steps religiously during your interview practice 1. Restate the question and make sure you understand the problem statement by confirming with the interviewer Understand the problem really well before structuring or asking for data.

Clarify the goals Ask specific questions to clarify goals. Write out your structure First, ask your interviewer for a minute to prepare your structure since this part is extremely important and determines whether you will succeed in solving the case. Typically, you'd want to know: The size of the company Whether it is profitable and growing How a business transaction works within the company How is the product being produced and what are some crucial production steps?

Industry: For cases where external factors are decisive e. What is its configuration? Who are the key players?

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Who are the suppliers? What has changed? Who has left the industry? Who has recently entered the market? Have any of the competitors changed their pricing? What about buying behavior? Was there a change in regulations? What are the major substitute products? What are the future predictions about the market? In these cases, you want to know: What exactly is the product?

Structuring your response

What does it do? What is it mainly used for? Has there been a change in the way it is being used? What is the lifecycle of the product? Is it still in the development phase or about to become outdated? Who are the customers? How are they segmented?