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Roblox Data Scientist Interview Questions

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

50questions
~7htotal time
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1
SQL & Data ManipulationStart here. 10 questions + 2 drills · ~102 min
SQL Top 10% by Session LengthHard
Practice

Find the top 10% of Roblox users by total session length using aggregation and NTILE window functions.

sql queryRoblox
Daily IP Takedown Resolution RateEasy
Practice
Practice drill

Calculate daily Roblox IP takedown resolution rates using a LEFT JOIN, conditional aggregation, and date filtering.

sql queryData AnalysisRoblox
Monthly Sales Trends by CategoryMedium
Practice
Practice drill

Aggregate monthly sales by product category and use LAG to calculate month-over-month changes.

InfrastructureToolsData WranglingTotal Wine & MoreInc.Benjamin Moore
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2
A/B Testing & Experimentation5 questions · ~41 min
Common Pitfalls in Experiment ResultsHard
Recently asked

Identify the main pitfalls that can distort A/B test interpretation and explain how to guard against them.

PeekingNovelty EffectSample Ratio MismatchRoblox
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3
Machine Learning10 questions · ~82 min
Purpose of Cross-ValidationMedium
Recently asked

Explain why cross-validation is used to estimate generalization and support model selection and tuning.

Cross-ValidationModel EvaluationSupervised LearningRoblox
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4
Metrics5 questions · ~41 min
First Checks for Metric DropsEasy
Recently asked

Outline the first checks to diagnose a sudden drop in a core product metric, starting with data quality, scope, and decomposition.

Lagging IndicatorsLeading IndicatorsDiagnosisRoblox
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5
Product Sense7 questions · ~58 min
Balance Personalization and PrivacyHard
Recently asked

Framework for deciding how much personalization a financial product should use without undermining user trust and privacy.

User NeedsValue PropositionProduct VisionRoblox
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6
Statistics & Probability7 questions · ~58 min
Unequal Variance Difference of MeansMedium

Evaluates your knowledge of appropriate hypothesis tests under unequal variance assumptions.

Roblox
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7
More topics6 questions · ~49 min
Validate a Model Before DeploymentMedium
Recently asked

Explain how to validate a model before deployment, including thresholds, calibration, and holdout testing.

Cross-ValidationCalibrationThreshold TuningRoblox
Explain ETL in Data EngineeringEasy
Recently asked

Explain the ETL process, why it matters, and how it fits into a practical data pipeline.

ETLOrchestrationQualityRoblox
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The finish line: interview-readyComplete all 50 questions plus 2 hands-on drills to finish this plan.