Metrics question
The creation of Facebook user groups has gone down by 20%. What will you do?
- Meta
- Metrics
- Medium
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What this question tests
Structured root cause diagnosis of a metric drop, separating a measurement problem from a real behavior change.
How to approach it
- Confirm the 20% drop is real by ruling out a logging change, a definition change in what counts as a group, or a reporting bug.
- Segment the drop by platform, region, new versus existing users, and the entry point people use to start creating a group.
- Check for a recent app update, a change to the create-group button placement, or a new content policy that could suppress creation.
- Look upstream at funnel steps: impressions of the create flow, taps, form completion, and launch, to find where users drop off.
- Talk to trust and safety about enforcement changes that could be blocking or discouraging creation.
- Once you isolate the cause, propose a fix, such as simplifying the creation form or re-promoting the entry point, and test it.
What a strong answer includes
- States a concrete baseline, e.g. groups created falling from 500k to 400k a week, and asks whether that is week over week or a reversion from a launch spike.
- Ranks hypotheses by cost to check, ruling out instrumentation first since it is the cheapest to verify.
- Separates a funnel problem (fewer people finishing the flow) from a top of funnel problem (fewer people starting it).
- Proposes a guardrail metric, like group creation success rate, to watch while the root cause is investigated.
Common mistakes
- Jumping to a product fix before confirming the metric itself is accurate.
- Treating all users as one segment instead of slicing by platform, geography, and tenure.
Likely follow-up questions
- How would you tell if this drop is seasonal rather than a real problem?
- What guardrail metric would you set while you investigate?
- Who on the team would you loop in first?
More metrics questions
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- You launched a new signup flow to encourage new users to add more profile information. A/B test results indicate that the % of people that added more information increased by 8%. However, 7 day retention decreased by 2%. What do you do?Google · Metrics · Hard
- Define the metrics for YouTube search.Google · Metrics · Medium
- You are the PM of Instagram app. The MAU has been constant but DAU has declined. What will you do?Meta · Metrics · Medium
More questions from Meta
Learn the skill behind it
Chapters of the AI PM course that teach what this question tests.
- Chapter 9: Prove it paid off: outcomes, economics, and pricing
- Chapter 2: Data fluency: SQL, logs, and reading the truth yourself
- Chapter 14: Get the job: the AI PM interview loop