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Walmart Data Analyst Interview Questions

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

15questions
~2htotal time
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1
PipelinesStart here. 4 questions · ~32 min
Automating Data Cleaning With PythonMedium

Evaluates ability to automate data prep and improve efficiency using scripting.

data cleaningAutomationpythonWalmart
Handling Missing Values and OutliersMedium

Assesses practical data-wrangling skills and robust handling of imperfect data.

missing valuesData ManipulationWalmart
Ensuring Data Quality at ScaleMedium

Evaluates data quality practices, validation, and reliability controls for analytics consumers.

Data QualityWalmart
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2
Behavioral & Leadership7 questions · ~56 min
Data-Driven Walmart Decision ImpactMedium

Assesses impact of analytics on business decisions and ability to translate results into action.

Data AnalysisWalmart
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3
More topics4 questions · ~32 min
Diagnosing Conflicting KPI TrendsMedium

Tests root-cause analysis when KPIs disagree and ability to validate hypotheses.

KPIsroot cause analysisWalmart
Investigating User or Transaction DropsMedium

Assesses diagnostic thinking and analytics approach for sudden metric declines at Walmart scale.

transaction volumeWalmart
SQL Performance OptimizationMedium

Assesses query tuning skills and performance troubleshooting for large-scale data.

large datasetsquery optimizationWalmart
Sizing Markets and Logistics SavingsHard

Evaluates analytical modeling approach for market sizing and operational cost impact.

logisticsMarket SizingWalmart

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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Top Users by Recent Transaction VolumeMedium
Practice
Practice drill

Find the top 3 users by completed transaction volume in the last 30 days using joins and aggregation.

Data Analysisquery optimizationsqlTTier 1 BankRevolutChime
Top Content by Watch TimeMedium
Practice
Practice drill

Rank Disney+ Hotstar content by monthly watch time using aggregation, joins, and ROW_NUMBER().

Window FunctionsData Analysisquery optimizationDDisney+HotStar
Clean Incomplete Salesforce Lead RecordsMedium
Practice
Practice drill

Clean Salesforce lead data with CTEs, LEFT JOINs, CASE, and COALESCE to standardize missing values for analysis.

missing valuesdata preparationdata cleaningSalesforce
The finish line: interview-readyComplete all 15 questions plus 3 hands-on drills to finish this plan.