Cross-device coverage dropped 10% — what happened?
Diagnose a problemMediumProblem. The graph's cross-device match coverage fell ~10% week-over-week. Leadership fears a model regression. What happened?
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.