Analyze Trade-off Between DAU Growth and Ad Revenue
Company: TikTok
Role: Data Scientist
Category: Analytics & Experimentation
Difficulty: medium
Interview Round: Technical Screen
##### Scenario
A product manager needs to understand the trade-off between increasing daily active users (DAU) and maximizing ad revenue in a simple ads product.
##### Question
How would you analyze the trade-off between boosting DAU and optimizing ad revenue? What metrics, experiment designs, and business considerations would you bring into the discussion?
##### Hints
Cover retention, ARPU, ad-load elasticity, LTV, cohort analysis, and marginal impact on engagement.
Quick Answer: This question evaluates a data scientist's competency in metrics decomposition, causal inference, experimentation, and trade-off analysis between product engagement and ad monetization.