Tech(x) Data Scientist Interview Questions
The questions to prepare for a Tech(x) Data Scientist interview. Questions from real interview reports rank first. Updated daily.
Design an A/B test for a new platform feature, including success metrics, power, guardrails, and a clear ship decision.
Tech(x)Identify the main pitfalls that can distort A/B test interpretation and explain how to guard against them.
Tech(x)Build a classifier for a highly imbalanced dataset and choose metrics, sampling, and thresholds that fit the minority class.
Tech(x)Evaluates your ability to design and implement ranking diversification logic.
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Explain what statistical significance means and why it matters when interpreting experimental or analytical results.
Tech(x)Outline the first checks to diagnose a sudden drop in a core product metric, starting with data quality, scope, and decomposition.
Tech(x)Assesses your end-to-end workflow for data acquisition, analysis, and communication of insights.
Tech(x)Identify Tech(x)'s five most active users with a date-filtered LEFT JOIN and grouped activity counts.
Tech(x)Use PostgreSQL aggregations to produce list-like arrays and dictionary-like JSON objects from data records.
ExlExtract qualifying user engagement metrics and rank users within each country by activity.
ByteDanceEvaluates system design thinking for ranking and personalization at a high-scale web platform.
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