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Prep plan
Updated weekly · Last refresh Aug 30

Milliman Data Scientist Interview Questions

The questions to prepare for a Milliman Data Scientist interview. Questions from real interview reports rank first. Updated weekly.

35questions
~5htotal time
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1
Statistics & ProbabilityStart here. 3 questions · ~24 min
2
Machine Learning8 questions · ~65 min
GLM vs Tree ModelsMedium

Tests your ability to choose models based on interpretability, calibration, and predictive performance.

Bias-Variance TradeoffSupervised LearningDecision TreesMilliman
Preventing Overfitting in Biased DataMedium

Tests your approach to validation, regularization, and bias-aware modeling.

Cross-ValidationBias-Variance TradeoffRegularizationMilliman
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3
Behavioral & Leadership16 questions · ~130 min
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4
More topics8 questions · ~65 min
API-Based Data Integration ExperienceEasy

Discuss how you use APIs in data pipelines, including ingestion patterns, validation, and operational monitoring.

ETLData ModelingMilliman
Rolling 30-Day Claims AverageMedium

Tests SQL window function skills for time-based aggregations in healthcare analytics.

Window FunctionsDate FunctionsRunning TotalsMilliman
Metrics for Healthcare AnalyticsMedium

Tests product thinking and metric design to balance outcomes and risk.

North Star MetricUser NeedsGuardrail MetricsMilliman
Diagnose Metric Drop After LaunchMedium

Tests your debugging approach for data pipelines, model drift, and instrumentation changes.

Funnel AnalysisKPIDiagnosisMilliman
Design A/B Test for DashboardMedium

Tests experimental design skills including metrics, randomization, and evaluation criteria.

experiment designMDEGuardrail MetricsMilliman
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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
The finish line: interview-readyComplete all 35 questions plus 3 hands-on drills to finish this plan.