Do most of the market sizing qs in Bain require you to estimate ALL the numbers along the way or do the interviewers typically have key information #s on adoption rates, pricing etc..?
Bain Mkt sizing


Hi there,
The entire point is to get a sense of your judgement - I'm sorry but numbers will not be provided!
Make sure that whatever approach you take in market sizing is the path of “least resistance”. As in, you're choosing to break things down in a way that is based off of things you already have a sense of (as in, you can reasonable guestimate).
If you need help with #s you're not doing market sizing right!

There is no fixed answer to this. It depends on a case-by-case basis. At the end of the day you must understand the objective of market sizing questions - to gauge your sense and logic.
You could have a market-sizing exercise with literally no numbers given - which means you are also being tested on your logic while taking assumptions. Many people run the mistake of taking “shot-in-the-dark” assumptions - without basing them in some kind of logic or experience.
Alternatively, you could also have some of the numbers given - such as the one you mention. But it is entirely up to the interviewer on how it will be.

Hi, usually you are supposed to estimate every number you are able to. However, there are no written rules about it, the interview is a process of continuous alignment and problem solving with the interviewer, so I recommend running the case with her
Best,
Antonello









