Top 15
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Updated weekly · Last refresh Aug 30

SMX Data Scientist Interview Questions

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

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1
Machine LearningStart here. 7 questions · ~62 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 TradeoffSMX
Model Suitability AssessmentHard

Tests ability to assess data quality, assumptions, and fit for modeling choices.

Cross-ValidationFeature EngineeringBias-Variance TradeoffSMX
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2
More topics8 questions · ~70 min
SQL Top 10 Products by SalesEasy
Practice

Aggregate completed SMX product sales and return the top 10 products by units sold.

RankingGroup ByAggregationsSMX
Prioritize Features for a New ProductMedium

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

Feature PrioritizationUser Needsproduct developmentSMX
Choose the Right Evaluation MetricsEasy

Pick the right metrics to evaluate a machine learning model and explain why they fit the problem.

PrecisionAccuracyRecallSMX
Predicting Subscription ChurnMedium

Tests ability to frame churn problems and choose modeling and evaluation steps.

RetentionChurnDiagnosisSMX
Linear Regression Assumptions (Basics)Easy

Tests foundational knowledge of linear regression assumptions and how they affect inference.

RegressionassumptionsSMX
Cross-Validation ImplementationMedium

Tests understanding of robust evaluation and correct cross-validation setup.

Cross-ValidationF1 ScoreAccuracySMX
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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 15 questions plus 2 hands-on drills to finish this plan.