Increase posts receiving one comment
Company: Meta
Role: Data Scientist
Category: Analytics & Experimentation
Difficulty: medium
Interview Round: Technical Screen
Overview: Define the metric, guardrails, interventions, and a test plan for raising the share of group posts that get at least one comment within 48 hours, then diagnose a specific failure mode. The hard parts are the eligible-post denominator, the delayed 48-hour outcome, and choosing what to randomize.