„You are exactly as smart as I thought you would be”, said an ex-McKinsey partner to me after I solved his market sizing task in an interview. Then he escorted me to the elevator, saying “Expect a reply next week, but don’t worry”.
If you, as most candidates I have worked with, start market sizing by saying “The population of Germany is 80m people…”, you are dramatically reducing your chances for an offer. It is because you sound like a junior analyst, not like a strategy consultant. You do not show that you understand WHY market sizing is done in real life.
You need to change your mindset. Market sizing is NOT a math problem, it is a STRATEGIC problem. To take your market sizing skills to the next level, you need ONLY ONE session with me after which you will be a market sizing ROCKSTAR.