With this type of question (sometimes called a guesstimate), the interviewer presents you with a problem to solve. How would you estimate the best month to offer a discount on shoes? How would you estimate the weekly profit of your favorite restaurant?
The purpose here is to evaluate your ability to problem solve and your overall comfort working with numbers. Since this is about how you think, think out loud as you work through your answer.
- What types of data would you need?
- Where might you find that data?
- Once you have the data, how would you use it to calculate an estimate?