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Updated weekly · Last refresh Aug 30

Brown University Data Scientist Interview Questions

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

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1
Machine LearningStart here. 5 questions · ~40 min
Supervised vs Unsupervised LearningEasy

Explain how supervised and unsupervised learning differ, and ground the distinction in a practical ML example.

Unsupervised LearningFeature EngineeringBias-Variance TradeoffBrown University
Prevent Overfitting in ML ModelsEasy

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

Cross-ValidationBias-Variance TradeoffRegularizationBrown University
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2
Product Sense3 questions · ~24 min
Motivation for Data Engineering WorkEasy

Explain what drives your interest in data engineering, grounded in user needs and the value created by reliable data systems.

Jobs to Be DoneUser NeedsValue PropositionBrown University
Making Findings ActionableMedium

Tests translating analysis into decisions stakeholders can implement.

User NeedsValue PropositionProduct VisionBrown University
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3
Behavioral & Leadership3 questions · ~24 min
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4
More topics5 questions · ~40 min
Handling Missing DataHard

Tests data quality handling and correct treatment of missingness.

Window FunctionsData WranglingCTEsBrown University
Evaluate Regression with RMSE and MAEEasy

Explain how to evaluate a regression model with RMSE and MAE, and how to interpret the tradeoff between average and large errors.

RegressionMAERMSEBrown University
Handling Unexpected Analysis ResultsMedium

Tests investigation, debugging, and statistical reasoning when results do not match expectations.

ExperimentationHypothesis TestingCausal InferenceBrown University
Designing Educational ExperimentsMedium

Tests experimental design skills for evaluating educational interventions at a university scale.

ExperimentationHypothesis TestingA/B TestingBrown University
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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 16 questions plus 3 hands-on drills to finish this plan.