I went straight for engagement metrics and the interviewer just kind of waited, which made me nervous.
Start by clarifying the specific improvement and its goal, then define a north star metric and supporting metrics across the user journey. Propose a measurement plan that includes A/B testing, guardrail metrics, and long-term holdout to capture both immediate and lasting impact.
Pro tip: Emphasize measuring counter-metrics and long-term effects to ensure improvements don't harm other parts of the ecosystem or user trust. Show awareness of network effects and the importance of segment-level analysis.
Ask clarifying questions to understand what specific change was made and what user or business problem it aims to solve. Align on the primary objective (e.g., increase engagement, retention, or satisfaction).
Choose a north star metric (e.g., daily active users, messages sent) and supporting metrics across acquisition, engagement, retention, and monetization. Include qualitative feedback and guardrail metrics.
Propose an A/B test with a control and treatment group, ensuring proper randomization and sample size. Define the duration and consider network effects by using cluster-based randomization if needed.
Compare metrics between groups, check for statistical significance, and segment by user demographics or behavior. Investigate unexpected effects and decide whether to launch, iterate, or abandon.
Set up a long-term holdout to measure sustained effects and ensure the improvement doesn't degrade over time. Track guardrail metrics to catch regressions in other areas.
AI-generated suggestions, not part of the candidate's original notes. May be inaccurate — verify before relying on them.