eBay Data Scientist Interview Questions
The questions to prepare for a eBay Data Scientist interview. Questions from real interview reports rank first. Updated weekly.
Find the second highest distinct salary from a single table using basic PostgreSQL ordering and limiting.
eBayCompare batch and streaming data processing, including when each fits best in a pipeline.
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Choose the most important launch metrics, balancing early signals, long-term outcomes, and a clear KPI hierarchy.
eBayExplain how supervised and unsupervised learning differ, and ground the distinction in a practical ML example.
eBayIdentify major online experiment pitfalls and explain how they can bias results in a streaming product A/B test.
eBayExplain how to test whether an observed 5% conversion rate drop is statistically significant in an experiment or before-after comparison.
eBayExplain precision, recall, F1-score, and ROC-AUC for a classification model.
eBayDesign a production ML decision service with low latency serving, secure data handling, and scalable training and inference.
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