Reddit — Consumer — Product Case Questions

Role context: Senior Data Scientist, Consumer · Est. study time: 40 min · 4 questions

How these map to the role

These are community-platform cases: an ambiguous engagement question you frame into metrics and a measurement, and a C-suite-ready recommendation. The recurring instinct: anchor on DAUq + meaningful engagement (not raw time), guard community health, and reason across the create→consume loop.

Each answer is a coaching walkthrough: a Sample answer (clarify → approach → a simulated back-and-forth → a clear call), then a Deep dive with illustrative example, then a Grading rubric.

Questions (4)

Daily active uniques dropped — what happened?Diagnose a problemMediumDefine success for a new-user community-recommendation featureMeasure successHardShould you ship the home-feed ranking change?Launch or notHardMeasure a community-level change you can't A/BMeasure impactHard