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Updated weekly · Last refresh Oct 17

Leidos Data Analyst Interview Questions

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

26questions
~3htotal time
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1
SQL & Data ManipulationStart here. 3 questions + 3 drills · ~54 min
Investigating Report DiscrepanciesMedium

Tests your troubleshooting workflow and root-cause analysis for business-critical reporting.

ReconciliationDiagnosisdata integrityLeidos
Writing Complex SQL QueriesMedium

Tests your SQL depth, query design approach, and ability to support analysis at scale.

performancesql queriesdatabasesLeidos
Ensuring Data Accuracy and IntegrityMedium

Tests your data quality practices and integrity checks for large, varied datasets.

null handlingData Wranglingdata integrityLeidos
Second Highest Without AggregatesHard
Practice
Recently asked
Practice drill

Find the second highest salary in each department without using aggregate functions.

SubqueriesRankingSelf-JoinsCredit GenieDevoteamCisco Restaurant + Bar
SQL Window Functions Moving AverageMedium
Practice
Recently asked
Practice drill

Calculate a three-day moving average of active-client revenue using aggregation and SQL window functions.

Window FunctionsData AnalysissqlEEvalueserveSShyena Tech YarnsAATB Financial
SQL for User RetentionMedium
Practice
Recently asked
Practice drill

Measure monthly user retention by signup cohort using date calculations and aggregated activity.

Window FunctionsDate FunctionsCTEsGoogleLeidosCConstellation Technologies
2
Behavioral & Leadership19 questions · ~152 min
Overcoming a High-Stakes SetbackMedium

Tests resilience and ownership under pressure, especially in ambiguous situations that require clear prioritization and measurable recovery.

personal growthresiliencechallengeLeidos
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3
More topics4 questions · ~32 min
Data Cleaning in ETL PipelinesEasy

Approach for cleaning and preparing raw data inside an ETL pipeline.

Data WranglingETLQualityLeidos
Defining a ConfounderMedium

Evaluates your understanding of confounding in statistical analysis.

statisticsLeidos
Choosing the Right VisualizationMedium

Tests your judgment in communicating insights effectively through the right visualization choices.

MetricsCommunicationDiagnosisLeidos
Structuring Resource Allocation AnalysisMedium

Tests your analytical thinking and ability to translate operational questions into structured data analysis.

Metricsdata collectionUse CasesLeidos

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The finish line: interview-readyComplete all 26 questions plus 3 hands-on drills to finish this plan.