One price elasticity for all markets — why is that wrong?
Heterogeneous effectsHardProblem. Your pricing experiment reports a single average treatment effect for a price change across all of Airbnb. Why is one global number misleading here, and how would you analyze the effect properly?
Before you reveal: say your answer out loud, as if you were in the real interview — get your reasoning across clearly first. There is no single correct answer: reading what the interviewer is really after and defending your own thinking is what makes an answer strong.