Estimate Portal’s causal lift on video-call usage
Company: Meta
Role: Data Scientist
Category: Statistics & Math
Difficulty: medium
Interview Round: Technical Screen
Overview: This question evaluates applied causal inference and statistical analysis skills, including defining estimands, designing staggered-adoption difference‑in‑differences/event‑study regressions with fixed effects, propensity‑based selection control and matching/weighting, power analysis for low treated share, and robustness and sensitivity checks.
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