Top 21
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Updated weekly · Last refresh Oct 17

Washington University in St. Louis Data Analyst Interview Questions

The questions to prepare for a Washington University in St. Louis Data Analyst interview. Questions from real interview reports rank first. Updated daily.

21questions
~3htotal time
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1
Statistics & ProbabilityStart here. 4 questions · ~33 min
Statistical vs Practical SignificanceMedium

Explain why a statistically significant experiment result may still be too small to matter for product or business decisions.

Confidence IntervalsExperimentationHypothesis TestingWashington University in St. Louis
Normal and ExperienceMedium

Evaluates understanding of core probability concepts used in data analysis.

experienceWashington University in St. Louis
Statistical Tools and TestsMedium

Tests depth of statistical tooling and ability to select and run appropriate tests.

Washington University in St. Louis
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2
Behavioral & Leadership13 questions · ~106 min
Explaining Statistical Work ClearlyEasy

Tests whether you can communicate statistical thinking clearly, own the analysis end-to-end, and adapt your message to different audiences.

interview preparationstatisticstechnical experienceWashington University in St. Louis
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3
More topics4 questions · ~33 min
Data Quality in ETL PipelinesEasy

Approach for maintaining data quality and integrity across ETL pipelines.

IdempotencyData ModelingQualityWashington University in St. Louis
Outlier Treatment ExperienceMedium

Assesses practical experience cleaning and managing data for analysis.

data managementWashington University in St. Louis
Optimizing Database for RetrievalMedium

Tests database design tradeoffs and usability for non-technical stakeholders.

database optimizationnormalizationsqlWashington University in St. Louis
Securing Sensitive Data and PHIMedium

Tests your ability to protect sensitive data and comply with privacy expectations.

Securitydata integrityCloudWashington University in St. Louis

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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
The finish line: interview-readyComplete all 21 questions plus 3 hands-on drills to finish this plan.