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Updated weekly · Last refresh Sep 20

Exelixis Data Analyst Interview Questions

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

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~3htotal time
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1
SQL & Data ManipulationStart here. 8 questions + 3 drills · ~94 min
Ensuring Integrity Across Data SourcesEasy

Explain practical SQL techniques to preserve data integrity when combining multiple data sources.

JoinsData WranglingCase WhenExelixis
Cleaning and Normalizing Unstructured DataMedium

Tests your techniques for transforming messy text or semi-structured data into reliable reporting fields.

data cleaningExelixis
Validating Data for Clinical ReportsMedium

Tests your dataset validation steps, QA checks, and readiness criteria for clinical reporting.

data validationdata integrityExelixis
Reconciling Data Across SystemsMedium

Tests your approach to data reconciliation, mapping, and validation across multiple systems.

data integrityExelixis
Ensuring Integrity When Merging DatasetsMedium

Tests your controls for joins, deduplication, referential integrity, and correctness at scale.

data integrityExelixis
Remove Duplicates Keeping LatestMedium
Practice
Practice drill

Delete duplicate contact records while retaining the most recently updated row for each email address.

Window Functionsdata cleaningRankingBNSF RailwayRevature
Validating Newly Ingested DataMedium
Practice
Practice drill

Validate a newly ingested dataset for row-count discrepancies, duplicates, invalid values, missing keys, and referential integrity issues.

JoinsData Wranglingcomplex queriesAdswerve
Data Integrity Across Legacy SystemsHard
Practice
Practice drill

Audit records from legacy systems and flag missing mappings, duplicates, missing canonical data, and attribute mismatches.

Joinsdata managementlegacy systemsAMD
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2
Behavioral & Leadership9 questions · ~72 min
Resolving a Critical Data AnomalyMedium

Tests ownership of data quality issues, root-cause analysis, and clear stakeholder communication under pressure.

Problem SolvingOwnershipdata anomalyExelixis
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3
More topics2 questions · ~16 min
Troubleshooting Data Pipelines Under DeadlineHard

Tests incident response, debugging skills, and prioritization under time pressure.

data pipelinedeadline managementTroubleshootingExelixis
Models for Enrollment and PerformanceMedium

Tests your modeling choices and reasoning for forecasting in biotech and pharma contexts.

Exelixis

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The finish line: interview-readyComplete all 19 questions plus 3 hands-on drills to finish this plan.