Cut variance on a noisy engagement metric, and analyze a ratio right
Variance & ratio metricsHardProblem. Your primary metric, sessions per member, is noisy, so tests are underpowered and slow. You also report a ratio guardrail, value actions per session. Show how you would cut variance on the primary and analyze the ratio correctly.
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.