You're the PM for Facebook Reactions. With reactions up 20% but comments down 10%, what actions would you take?
- Metrics
- Meta
- Hard
- 15 min
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How to structure your metrics answer
Connect every metric to a product decision. A list of KPIs is weaker than a metric tree with a clear primary signal and guardrails.
- Restate the product goal and the user value the metric must represent.
- Choose one primary metric, then define its numerator, denominator, window, and eligible population.
- Add input, diagnostic, and guardrail metrics that explain movement or prevent harmful optimization.
- Describe instrumentation, segmentation, review cadence, and the decision each signal would trigger.
Practise this question under interview conditions. Answer it out loud against a timer with an AI interviewer that asks follow-ups, then review the scored report.
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