Your question is Diagnose a Metric Drop. Take a moment with it on the right.
Talk me through your thinking if you like. When you're confident, submit your answer and I'll grade it like a real screen (7/10 or better passes).
Walk me through a time you identified a metric drop; how did you isolate the root cause?
Discuss one real example where you were responsible for investigating a declining KPI or product metric. Explain how you validated the drop, decomposed it into contributing factors, tested competing hypotheses, and communicated the conclusion. Distinguish correlation from evidence of causation, and describe the action taken or recommended. Be prepared to explain data quality checks, segmentation choices, time comparisons, and any follow-up or guardrail metrics used.