A Premium price change rolled out to one country. Did it cause the lift?
Measure impactHardProblem. LinkedIn changed Premium pricing in one country. Afterward, Premium revenue in that country rose. A VP says the pricing change caused the lift. How would you check whether that is true?
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.