ByteDance Statistics & Math Interview Questions
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ByteDance
Medium
Data Scientist LockedModel overdispersed counts; estimate treatment lift
Weekly posts per creator are overdispersed and zero‑inflated. In a creator‑level randomized test of a nudge: - Control: n_c=40,000 creators, total pos...
Statistics & Math
1
0
Oct 13, 2025
ByteDance
Easy
Data Scientist LockedExplain Type I/II errors vs precision/recall
Questions 1. Define Type I error and Type II error in hypothesis testing, and map them to false positives and false negatives. 2. Explain how Type I/I...
Statistics & Math
0
0
Nov 8, 2025
ByteDance
Medium
Data ScientistCompute cluster-aware significance and sequential corrections
Cluster-Randomized Tipping UI Experiment: Power, Sequential Testing, and Multiplicity Context: A creator-level (cluster) randomized experiment evaluat...
Statistics & Math
0
0
Oct 13, 2025