Evaluate a New Ads-Ranking Algorithm
Company: Meta
Role: Data Scientist
Category: Analytics & Experimentation
Difficulty: medium
Interview Round: Onsite
Overview: Design an experiment for a new ads-ranking algorithm, including the primary metric, randomization unit, advertiser budget interference, and launch guardrails. The case also shows how to interpret higher conversion alongside lower CTR and distinguish observed spend from an advertiser's actual budget.