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Starr Companies Data Scientist Interview Questions

The questions to prepare for a Starr Companies Data Scientist interview. Questions from real interview reports rank first. Updated daily.

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1
Machine LearningStart here. 13 questions · ~104 min
Handling Severe Class ImbalanceMedium

Explain how to train and evaluate a classifier when the positive class is rare and accuracy is misleading.

ExperimentationFeature EngineeringSupervised LearningStarr Companies
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2
Statistics & Probability5 questions · ~40 min
Interpreting Code and P-ValuesMedium

Tests ability to interpret code and communicate statistical concepts like p-values.

code analysisStarr Companies
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3
SQL & Data Manipulation3 questions + 3 drills · ~54 min
SQL and Data PreprocessingMedium

Evaluates structured data preprocessing and readiness for downstream modeling.

Data AnalysisStarr Companies
Use Window FunctionsMedium
Practice
Practice drill

Demonstrate window functions by ranking active employees by salary within each department.

Window FunctionsData ManipulationRankingJohnson & JohnsonCRIFRegions
SQL Window Functions for Rolling MetricsHard
Practice
Practice drill

Calculate each user's 7-day activity average and rank users within their cohort using PostgreSQL window functions.

Window FunctionsDate FunctionsData ManipulationTredenceEchostarEliassen Group
SQL Window FunctionsHard
Practice
Practice drill

Calculate monthly user totals, running totals, and time-based rankings with PostgreSQL window functions.

Window FunctionsDate FunctionsData ManipulationTThoucentricLoopEEbiquity
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4
Behavioral & Leadership9 questions · ~72 min
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5
More topics7 questions · ~56 min
Diagnose a Metric Drop After LaunchMedium

Investigate why a key KPI moved the wrong way after a product change and separate signal from noise.

Lagging IndicatorsLeading IndicatorsDiagnosisStarr Companies
AUC and AUC-ROC CurveMedium

Tests your understanding of classification evaluation metrics and ROC interpretation.

Starr Companies
Explain Logistic Regression Step-by-StepHard

Assesses depth of understanding of logistic regression mechanics and assumptions.

Starr Companies
Defining Underwriting and Claims MetricsMedium

Tests your product sense for translating business goals into measurable underwriting and claims metrics.

MetricsUser NeedsValue PropositionStarr Companies
Experiment Financial Impact of UnderwritingHard

Tests your ability to design experiments that measure financial outcomes and control for confounding factors.

experiment designGuardrail Metricsfinancial impactStarr Companies
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The finish line: interview-readyComplete all 37 questions plus 3 hands-on drills to finish this plan.