Choose between A/B and switchback for spillovers

Company: Uber

Role: Data Scientist

Category: Analytics & Experimentation

Difficulty: hard

Interview Round: Technical Screen

Quick Answer: This question evaluates experimental-design and causal-inference competencies, specifically handling interference and spillovers, defining experimental units and treatment assignment, drawing causal DAGs, identifying bias sources, selecting primary and guardrail metrics, and pre-specifying decision rules.