Japanese Golf Balls

This sample case interview is a Market Sizing case. Use it to prep for your case interview – dive in now.

Case Study Prompt

You are going to visit a client who sells golf balls in Japan. Having had no time for background research, you sit on the plane wondering about the size of the market for golf balls in Japan, and what drives demand.

Your plane lands in fifteen minutes. How do you answer these questions?

* The population of Japan is 150 million

Case Overview

In this sample case interview, you’re being asked to size the market in Japan for golf balls. Make sure to read the prompt carefully so you understand the problem in the case.

Not sure how to solve Market Sizing questions? There are 2 methods you can use: either a top-down or bottom-up approach. Your job is to determine which tack will get you to an answer in the shortest amount of time.

Follow these 4 steps for this sample case interview:

1. Structure your approach
2. Make assumptions
3. Do the calculations
4. Get to an insight

LEK Interview Tips

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

In any case, there is always an opportunity to showcase your strategic thinking skills. Stretch yourself when gathering your insights for the case.

In this case, focus on coming away with 1 key takeaway.

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