Model overdispersed counts; estimate treatment lift
Company: TikTok
Role: Data Scientist
Category: Statistics & Math
Difficulty: medium
Interview Round: Onsite
Overview: Estimate the relative lift in weekly posts per creator from a randomized nudge experiment, where the counts are overdispersed and zero-inflated. Model the variance from the control arm's statistics, state what is assumed about the treatment arm, and extend the analysis across creator tenure and geos.