Roche Data Analyst Interview Questions

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

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SQL Top Products by RegionHard

Tests SQL windowing/aggregation skills and correctness for grouped top-N queries.

JoinsRankingAggregations

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Optimizing a Slow Query

Hard

Tests query optimization skills, performance diagnosis, and measurable improvements.

JoinsData WranglingCTEs

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Handling Missing and Anomalous Data

Medium

Tests data quality checks, anomaly handling, and safe transformations for patient-related datasets.

Data WranglingCase WhenAggregations

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Building a Dashboard From Scratch

Medium

Tests end-to-end dashboard design, stakeholder alignment, and decision impact.

KPIsLeading IndicatorsDiagnosis

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Choosing a Distribution Visualization

Easy

Tests visualization selection and ability to justify chart choice for time-based distribution insights.

KPIsLeading IndicatorsDiagnosis

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Roche

Root Cause for Metric Drop

Medium

Tests diagnostic visualization, structured root-cause thinking, and executive-ready communication.

KPIsLeading IndicatorsDiagnosis

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Roche

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Diagnose Dashboard Pipeline FailuresHard

Identify whether a dashboard issue comes from the source data, workbook logic, or Tableau Server.

InfrastructureDependenciesQuality

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Measuring Tool Productivity Gains

Medium

Tests experimental thinking, metrics selection, and statistical evaluation of productivity changes.

ExperimentationStatistical SignificanceA/B Testing

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