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Updated weekly · Last refresh Aug 30

Boston Scientific Data Scientist Interview Questions

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

23questions

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SQL & Data ManipulationStart here. 4 questions + 2 drills · ~54 min

Rolling Average with SQL WindowsMedium

Practice

Calculate each active RpmGlobal Enterprise Planning user's 30-day rolling average of daily activity.

Boston Scientific

SQL Join for Event DropoffMedium

Assesses ability to model relationships across tables and compute event-based cohorts in SQL.

Joinsuser retentionsql

Boston Scientific

Second Attempt Score Per UserEasy

Practice

Practice drill

Use ROW_NUMBER to return each student's second score on a specified Khan Academy exercise.

Data Analysissqluser engagement

Khan Academy

SQL Funnel Drop-Off AnalysisHard

Practice

Practice drill

Measure sequential Airbnb Homes funnel engagement and drop-off using CTEs, joins, aggregation, and LAG.

sql queryData Analysisuser engagement

Airbnb

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Statistics & Probability3 questions · ~26 min

Statistics for Medical Device EffectivenessMedium

Evaluates statistical method selection for clinical or device effectiveness analysis.

Data Analysis

Boston Scientific

Interpreting Borderline P-ValuesMedium

Evaluates statistical reasoning and decision-making under uncertainty.

Statistical Significance

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A/B Testing & Experimentation5 questions · ~43 min

Interpreting Wide Confidence IntervalsHard

A treatment shows a positive lift, but the confidence interval is wide. Explain how to judge actionability and decide whether to ship or gather more evidence.

Confidence IntervalsStatistical SignificanceSample Size

Boston Scientific

Experiment PitfallsMedium

Assesses experience avoiding bias, leakage, and invalid experiment design.

A/B Testing

Boston Scientific

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Product Sense4 questions · ~34 min

North Star vs Health MetricsMedium

Assesses metric selection and product-measurement thinking for data-driven decisions.

product metricsuser engagementKPI selection

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Behavioral & Leadership5 questions · ~43 min

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