Top 41
Prep plan
Updated weekly · Last refresh Aug 30

Notion Labs Data Scientist Interview Questions

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

41questions
~6htotal time
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1
SQL & Data ManipulationStart here. 6 questions + 1 drill · ~62 min
2
A/B Testing & Experimentation6 questions · ~52 min
Design Test for New FeatureMedium

Design an A/B test for a new platform feature, including success metrics, power, guardrails, and a clear ship decision.

experiment designfeature evaluationA/B TestingNotion Labs
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3
Machine Learning4 questions · ~35 min
Handling Missing Values in MLEasy

Explain practical strategies for handling missing values in a supervised learning workflow, from diagnosis to modeling and validation.

Cross-ValidationFeature EngineeringRegularizationNotion Labs
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4
Metrics5 questions · ~43 min
Evaluate Onboarding Step Funnel ImpactMedium

Assess whether a new onboarding step improves activation quality or adds enough friction to reduce overall funnel performance.

Funnel AnalysisConversion RateLeading IndicatorsNotion Labs
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5
Product Sense3 questions · ~26 min
Designing Notion Collaboration MetricsHard

Evaluates your product sense and metric design for long-term user value.

North Star MetricUser NeedsProduct VisionNotion Labs
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6
Behavioral & Leadership12 questions · ~104 min
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7
More topics5 questions · ~43 min
Diagnosing a Product Metric DropMedium

Decide whether a metric drop reflects a real shift or normal variation using hypothesis testing, confidence intervals, and baseline variability.

Confidence IntervalsHypothesis TestingStatistical SignificanceNotion Labs
Batch vs Streaming Data ProcessingEasy

Compare batch and streaming data processing, including when each fits best in a pipeline.

Stream ProcessingETLBatch ProcessingNotion Labs
Evaluating Recommendation SuccessMedium

Tests your ability to choose product and model metrics for recommendation quality and impact.

ML RankingModel ServingRecommendation SystemsNotion Labs
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The finish line: interview-readyComplete all 41 questions plus 1 hands-on drill to finish this plan.