Top 40
Prep plan
Updated weekly · Last refresh Aug 30

UST Data Scientist Interview Questions

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

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~6htotal time
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1
SQL & Data ManipulationStart here. 7 questions + 2 drills · ~78 min
2
Machine Learning7 questions · ~58 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 TradeoffUST
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3
Metrics5 questions · ~42 min
Using Metrics to Drive DecisionsEasy

Explain how you used a KPI and supporting metrics to diagnose a product issue and make a concrete product decision.

Funnel AnalysisKPIsLeading IndicatorsUST
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4
Statistics & Probability6 questions · ~50 min
Identifying Trends From a DatasetMedium

Tests exploratory analysis skills and ability to derive meaningful conclusions.

RegressionCorrelationData WranglingUST
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5
A/B Testing & Experimentation4 questions · ~33 min
Sample Size for Pricing ExperimentMedium

Tests your experimental design fundamentals for power and detectability.

Pricing StrategySample SizeUST
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6
Product Sense3 questions · ~25 min
Investigate Daily Active User DropHard

Evaluates your diagnostic approach to user behavior changes using data and hypotheses.

product analysisuser engagementUST
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7
More topics8 questions · ~66 min
Batch vs Stream Processing Trade-offsMedium

Compare batch and stream processing across latency, complexity, cost, and data quality in a modern analytics pipeline.

InfrastructureStream ProcessingETLUST
Approach to Underperforming ModelsMedium

Structured approach for diagnosing an underperforming model and deciding whether to fix data, thresholding, calibration, or the model.

PrecisionAccuracyRecallUST
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The finish line: interview-readyComplete all 40 questions plus 2 hands-on drills to finish this plan.