ByteDance Data Scientist Interview Questions
The questions to prepare for a ByteDance Data Scientist interview. Questions from real interview reports rank first. Updated weekly.
Explain how supervised and unsupervised learning differ, and ground the distinction in a practical ML example.
ByteDanceSet a clear north star, supporting KPIs, leading indicators, and guardrails for a new product feature.
ByteDanceTests forecasting approach, modeling choices, and evaluation for new product scenarios at ByteDance.
ByteDanceIdentify major online experiment pitfalls and explain how they can bias results in a streaming product A/B test.
ByteDanceExplain SQL window functions and when to use ROW_NUMBER() versus DENSE_RANK() for ranked ticket analysis.
ByteDanceRank TikTok Shop users by monthly spend using joins, aggregation, date truncation, and ROW_NUMBER().
ByteDance
PulsePointCompute daily active users and a 7-day rolling average using a CTE, distinct counts, and window functions.
Meta
Spotify
Meta ITFind the second highest salary in each department without using aggregate functions.
Credit Genie
Devoteam
Cisco Restaurant + BarExplain how to tell whether a model is overfitting or underfitting using train versus validation performance and related checks.
ByteDanceEvaluates system design tradeoffs across search, booking workflows, and analytics data access.
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