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Updated weekly · Last refresh Sep 18
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Bain Capability Network Data Scientist Interview Questions

The questions to prepare for a Bain Capability Network Data Scientist interview. Questions from real interview reports rank first. Updated daily.

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1
MetricsStart here. 3 questions · ~26 min
2
A/B Testing & Experimentation3 questions · ~26 min
Lift Conversion but Hurt RetentionHard

An experiment increases conversion but lowers retention; assess whether the trade-off is real and whether the change should ship.

ExperimentationCausal InferenceGuardrail MetricsBBain Capability Network
Design Test for Product LaunchMedium

Design an A/B test for a new digital product launch with clear metrics, power, guardrails, and a defensible ship decision.

experiment designGuardrail Metricsprimary metricsBBain Capability Network
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3
Behavioral & Leadership4 questions · ~35 min
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4
More topics6 questions · ~53 min
SQL Window Functions Moving AverageMedium
Practice

Calculate a three-day moving average of active-client revenue using aggregation and SQL window functions.

Window FunctionsData AnalysissqlBBain Capability Network
Product Metric Dashboard DesignMedium

Evaluates your ability to translate product goals into clear, decision-ready metrics and dashboards.

product metricsstakeholder communicationdashboard designBBain Capability Network
Validating A/B Test ResultsMedium

Evaluates statistical rigor for experiment validation and decision readiness.

validationBBain Capability Network
Feature Selection for ML ModelsMedium

Tests your judgment in feature selection, relevance, and model performance tradeoffs.

Data AnalysisBBain Capability Network
Ensuring Reproducibility of AnalysisMedium

Tests rigor in documentation, versioning, and repeatable pipelines for analytics.

best practicesBBain Capability Network
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Hands-on SQL practiceWrite and run real queries in the editor. 2 drills · ~20 min
The finish line: interview-readyComplete all 16 questions plus 2 hands-on drills to finish this plan.