Yahoo Data Scientist Interview Questions
The questions to prepare for a Yahoo Data Scientist interview. Questions from real interview reports rank first. Updated weekly.
Compute daily active users and a 7-day rolling average using a CTE, distinct counts, and window functions.
YahooCalculate each user's running order total over time using a window function.
Inspire11
Western Digital
FactualAggregate Yahoo Mail messages and ad clicks by day using joins, CTEs, date extraction, and conditional aggregation.
YahooEstimate sample size and power for an experiment, define MDE and guardrails, and decide whether the test is worth running.
YahooExplain practical strategies for handling missing values in a supervised learning workflow, from diagnosis to modeling and validation.
YahooTests basic coding ability for statistical calculations in Python.
YahooApproach for safely backfilling missing data while preserving correctness, idempotency, and data quality.
YahooExplain which classification metrics to use and how metric choice depends on the business objective and error tradeoffs.
YahooApproach for identifying, prioritizing, and launching a new feature that increases user engagement.
YahooDiagnose a post-release KPI drop by separating instrumentation issues from real behavior changes and tracing the problem through the metric hierarchy.
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