ByteDance Data Scientist Interview Questions
The questions to prepare for a ByteDance Data Scientist interview. Questions from real interview reports rank first. Updated daily.
Calculate weekly TikTok precision and recall, then compare each metric with the preceding week using PostgreSQL date aggregation and LAG.
ByteDanceCompare three advertising options using incremental revenue, total costs, ROI, and sensitivity analysis to recommend the strongest investment.
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Discuss how to design, serve, evaluate, and monitor an end-to-end ML system.
ByteDanceUse prefix-balance frequency counting to compute the number of binary substrings with equal numbers of zeros and ones.
ByteDanceExplain data problems solved, metric choices, analytical methods, and how findings influenced decisions.
ByteDanceDesign a sales forecast for a new ByteDance product using analogs, time-series modeling, Bayesian updating, and prediction intervals.
ByteDanceIdentify major online experimentation pitfalls and explain practical mitigations for SRM, network effects, peeking, and novelty.
ByteDanceExplain how to tell whether a model is overfitting or underfitting using train versus validation performance and related checks.
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