Factored Data Scientist Interview Questions
The questions to prepare for a Factored 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.
FactoredCompute daily active users and a 7-day rolling average using a CTE, distinct counts, and window functions.
Meta
Spotify
Meta ITCalculate trailing 30-day active users and rank regional engagement tiers with PostgreSQL aggregation and window functions.
Publicis GroupeFactoredTests time-series preprocessing and modeling approaches for trends, seasonality, and stationarity.
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Build a classifier for a highly imbalanced dataset and choose training and evaluation methods that surface rare positives.
FactoredDesign a low latency ML inference platform for high-frequency online predictions with strict response times and evolving model features.
FactoredTests metric selection aligned with business cost asymmetry and error directionality.
FactoredDesign a marketing campaign experiment with a pre-registered metric plan, power calculation, and ship rule that respects guardrails.
FactoredDiagnose a post-release KPI drop by separating instrumentation issues from real behavior changes and tracing the problem through the metric hierarchy.
FactoredDefine a success metric for a new feature that captures real user value, not just raw usage.
Factored