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Case Preview

This sample case interview uses the Market Sizing Framework. Use it to prep for upcoming interviews – dive in now.

Case Prompt

Estimate the number of gas stations in the city of Chicago.

Case Overview

In this sample case interview, you are being asked to size the market for gas stations in Chicago. You can take either a top-down or bottom-up approach for solving Market Sizing problems.

Follow these 4 steps for this case:

  1. Structure your approach (5 or more steps is ideal)
  2. Make assumptions
  3. Do the calculations
  4. Get to an insight

Market Sizing questions are the most basic form of case interviews. If you want to be successful in your interviews, you should be able to do these in your sleep. Keep practicing if you are not there yet.

LEK Interview Tips

What does LEK look for in its candidates? Strategic thinkers.

Even in this Market Sizing case, you have an opportunity to showcase your strategic thinking skills.

In this sample case interview, focus on coming away with 1 area of improvement.

Need to brush up your casing skills before your case interview? Book an hour with an ex-MBB coach. Want more sample case interviews? Head back to the Case Library.

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