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Updated weekly · Last refresh Aug 30

University of Southern California Data Scientist Interview Questions

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

10questions
~1htotal time
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1
Machine LearningStart here. 4 questions · ~32 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 TradeoffUniversity of Southern California
Feature Selection ImportanceMedium

Tests your understanding of reducing noise, improving generalization, and avoiding leakage.

Feature EngineeringBias-Variance TradeoffRegularizationUniversity of Southern California
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2
Model Evaluation3 questions · ~24 min
Debug Consistently Inaccurate PredictionsMedium

Approach for diagnosing why a model's predictions are consistently inaccurate.

CalibrationAccuracyThreshold TuningUniversity of Southern California
Evaluating Predictive Model PerformanceMedium

Tests your understanding of validation, metrics, error analysis, and robustness checks.

AUC-ROCAccuracyRMSEUniversity of Southern California
Choosing Evaluation MetricsMedium

Tests your ability to align metrics with business goals and model objectives.

PrecisionAccuracyRecallUniversity of Southern California
3
More topics3 questions · ~24 min
Handling Missing DataHard

Tests data quality handling and correct treatment of missingness.

Window FunctionsData WranglingCTEsUniversity of Southern California
Common Statistical MethodsEasy

Tests breadth of statistical knowledge and practical selection of methods.

RegressionHypothesis TestingA/B TestingUniversity of Southern California
Explaining Visualization Tool ExperienceEasy

Explain how you use SQL analysis to build dashboards, choose visuals, and communicate insights to stakeholders.

ToolsData WranglingUniversity of Southern California

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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 10 questions plus 3 hands-on drills to finish this plan.