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Updated weekly · Last refresh Oct 17

Garner health Data Scientist Interview Questions

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

30questions
~5htotal time
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1
SQL & Data ManipulationStart here. 5 questions · ~47 min
7-Day Rolling Active UsersMedium
Practice

Compute daily active users and a 7-day rolling average using a CTE, distinct counts, and window functions.

Window FunctionsDate FunctionsRunning TotalsGarner health
Joining Tables for Partner SubscriptionsMedium

Tests your SQL join skills for partner-level analytics in Garner health's healthcare data context.

JoinssqlGarner health
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2
Statistics & Probability9 questions · ~85 min
Sample Size and Power PlanningMedium

Reason about sample size, power, and minimum detectable effect before launching an experiment.

Hypothesis TestingPower AnalysisSample SizeGarner health
Evaluating Observed Lift SignificanceMedium

Explain how to test whether an observed experiment lift is real using hypothesis testing, p-values, and confidence intervals.

Confidence IntervalsStatistical SignificanceP-ValuesGarner health
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3
A/B Testing & Experimentation3 questions · ~28 min
Pitfalls in Streaming Experiment AnalysisHard

Identify major online experiment pitfalls and explain how they can bias results in a streaming product A/B test.

Network InterferenceNovelty EffectSample Ratio MismatchGarner health
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4
Metrics4 questions · ~38 min
Diagnose a Metric Drop After LaunchMedium

Investigate why a key KPI moved the wrong way after a product change and separate signal from noise.

Lagging IndicatorsLeading IndicatorsDiagnosisGarner health
Doctor Procedure Performance RateMedium

Assesses your ability to define and compute conditional procedure performance metrics.

performance metricsGarner health
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5
Behavioral & Leadership7 questions · ~66 min
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6
More topics2 questions · ~19 min
External Data for Sparse PerformanceMedium

Tests data sourcing judgment for improving provider ranking signals under sparse internal data.

User ResearchProduct VisionGarner health
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