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Updated weekly · Last refresh Oct 17

Carvana Data Scientist Interview Questions

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

30questions
~4htotal time
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1
Machine LearningStart here. 8 questions · ~68 min
Prevent Overfitting in ML ModelsEasy

Explain how to reduce overfitting using regularization, validation, and model selection.

Cross-ValidationBias-Variance TradeoffRegularizationCarvana
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2
Product Sense3 questions · ~26 min
Prioritize Features for a New ProductMedium

A framework for deciding which features should ship first when building a new product.

Feature PrioritizationUser Needsproduct developmentCarvana
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3
Metrics3 questions · ~26 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 IndicatorsDiagnosisCarvana
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4
Behavioral & Leadership7 questions · ~60 min
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5
More topics9 questions · ~77 min
Check for Model OverfittingEasy

How to tell whether a model is overfitting using train and validation performance.

Cross-ValidationF1 ScoreAccuracyCarvana
Design an Installment-Flow ExperimentMedium

Design an A/B test for a new checkout installment-flow feature, including metrics, power, guardrails, and a disciplined ship decision.

ExperimentationHypothesis TestingA/B TestingCarvana
Testing a Conversion Rate DropMedium

Explain how to test whether an observed 5% conversion rate drop is statistically significant in an experiment or before-after comparison.

Hypothesis TestingData AnalysisStatistical SignificanceCarvana
Design a Cold Start RankerMedium

Design a recommendation and ranking system that handles cold start for both new users and new items without hurting feed quality.

Cold StartTwo-Tower ModelsRecommendation SystemsCarvana
Top 3 Customers by MonthMedium
Practice

Find the top three customers by monthly spend using aggregation and ranking.

Window FunctionsDate FunctionsRankingCarvana
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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 30 questions plus 2 hands-on drills to finish this plan.