Metrics question

Traffic on the New York Times homepage has decreased by 15%. How would you identify the cause?

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What this question tests

Root cause diagnosis of a metric drop: structuring a hypothesis tree across internal and external causes.

How to approach it

  1. Confirm the drop is real: check measurement or tracking errors first, like a broken analytics tag or timezone bug.
  2. Segment the drop by traffic source, such as direct, search, social, and referral, to isolate where the decline concentrates.
  3. Check for internal changes, like a recent homepage redesign, paywall change, or site outage around the same period.
  4. Check external factors, like an algorithm change from Google or a seasonal news cycle dip.
  5. Prioritize the hypothesis with the strongest signal and propose a fix or further investigation.

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