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Updated weekly · Last refresh Sep 26

Cardinal Health Data Scientist Interview Questions

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

28questions
~4htotal time
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1
Statistics & ProbabilityStart here. 3 questions · ~25 min
2
Machine Learning6 questions · ~50 min
Handling Missing Data in MLMedium

Explain practical strategies for handling missing data and how to validate that the chosen approach improves model performance.

Feature EngineeringData WranglingSupervised LearningCardinal Health
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3
SQL & Data Manipulation4 questions + 3 drills · ~63 min
4
Behavioral & Leadership6 questions · ~50 min
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5
More topics9 questions · ~75 min
Design Test for New FeatureMedium

Design an A/B test for a new platform feature, including success metrics, power, guardrails, and a clear ship decision.

experiment designfeature evaluationA/B TestingCardinal Health
Batch vs Streaming Data ProcessingEasy

Compare batch and streaming data processing, including when each fits best in a pipeline.

Stream ProcessingETLBatch ProcessingCardinal Health
Find Pain Points from FeedbackMedium

Use customer feedback to identify the biggest pain points in the user journey.

User ResearchUser NeedsPain PointsCardinal Health
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 IndicatorsDiagnosisCardinal Health
Validating Model PerformanceMedium

Tests evaluation methodology, metrics choice, and validation practices to ensure reliable model performance.

Cross-ValidationF1 ScoreAccuracyCardinal Health
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