Investigate a 7% Monthly Active Riders Drop and a 20% Wait-Time Increase

Company: Lyft

Role: Data Scientist

Category: Analytics & Experimentation

Difficulty: medium

Interview Round: Technical Screen

Quick Answer: This question evaluates a data scientist's ability to diagnose simultaneous metric regressions in a marketplace product using structured root-cause analysis. It tests decomposition of engagement and reliability metrics, supply-demand reasoning, and the ability to separate correlation from causation — skills central to analytics and experimentation roles.