Quantify Latent Demand for Group Video Calling Feature
Company: Meta
Role: Data Scientist
Category: Analytics & Experimentation
Difficulty: hard
Interview Round: Technical Screen
##### Scenario
The team plans to launch a group video-call feature and needs analytic guidance.
##### Question
Given access to richer data (messages, friend graphs, surveys), how would you quantify latent demand for group video calling? Define the primary success metrics and experimental design you would use to evaluate a group-call launch. Using data, how would you select an initial cap on the number of participants allowed in a group call?
##### Hints
Discuss interaction clustering, A/B tests, retention, percentile analysis, engineering cost versus user coverage.
Quick Answer: This question evaluates a data scientist's competency in product analytics, causal experimentation, metric definition, and trade-off analysis for product launch decisions, with emphasis on network-aware thinking and estimating latent demand from observational signals.