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Updated weekly · Last refresh Nov 8
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Insight Data Scientist Interview Questions

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

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1
SQL & Data ManipulationStart here. 3 questions + 2 drills · ~47 min
SQL Window Functions Moving AverageMedium
Practice

Calculate a three-day moving average of active-client revenue using aggregation and SQL window functions.

Window FunctionsData AnalysissqlIInsight
Handling Missing and Skewed DataMedium

Explain how to handle NULLs, skewed values, and outliers when preparing an analysis dataset using SQL.

Data Qualitynull handlingData WranglingIInsight
Assign Tied Transaction Amount RanksMedium
Practice
Practice drill

Rank each user's completed transactions by amount using a PostgreSQL window function.

Window Functionsnull handlingJoinsByteDance
Aggregate Completed Projects with Missing MetricsHard
Practice
Practice drill

Aggregate project outcomes and present a defensible SQL-based business case analysis.

project experienceJoinsbusiness problemTikTok
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2
A/B Testing & Experimentation3 questions · ~27 min
Designing an A/B Test for Feature ImpactMedium

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

experiment designfeature evaluationA/B TestingIInsight
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3
Behavioral & Leadership4 questions · ~36 min
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4
More topics5 questions · ~45 min
Measure Patient Onboarding SuccessMedium

Build a measurement framework for a new patient onboarding feature, with clear success metrics, guardrails, and decision criteria.

Success Criteriaonboardinguser valueIInsight
Statistical Significance in Business DecisionsEasy

Explain what statistical significance means, how p-values and confidence intervals support decisions, and why significance alone is not enough.

Hypothesis TestingStatistical SignificanceP-ValuesIInsight
Investigate User Engagement DeclineMedium

Investigate a 15% engagement decline by decomposing the metric, isolating root causes, and proposing actions.

RetentionDiagnosisEngagement MetricsIInsight
Diagnosing Engagement Metric DropMedium

Assesses your ability to investigate and isolate drivers of a sudden engagement metric decline.

diagnostic processIInsight
Designing Satisfaction MetricsMedium

Evaluates your product thinking for defining, validating, and operationalizing a user satisfaction metric.

product metricsdesignIInsight

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