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Updated weekly · Last refresh Oct 17

Dexis Data Analyst Interview Questions

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

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1
SQL & Data ManipulationStart here. 3 questions + 3 drills · ~54 min
Handling Missing DataEasy

Tests your data cleaning and imputation choices and their impact on analysis quality.

Data WranglingETLQualityDexis
SQL Query for a ProblemMedium

Tests your SQL problem-solving approach and ability to translate questions into queries.

SQL & Data ManipulationJoinsAggregationsDexis
Optimizing Slow SQL QueriesHard

Tests performance tuning skills for large datasets and operational analytics workloads.

SubqueriesJoinsquery optimizationDexis
Monthly Sales Trends by CategoryMedium
Practice
Practice drill

Aggregate monthly sales by product category and use LAG to calculate month-over-month changes.

InfrastructureToolsData WranglingTotal Wine & MoreInc.Benjamin Moore
Top Customers by Net SalesMedium
Practice
Practice drill

Compute top 10 customers by net sales using joins and aggregations, ordering by revenue with deterministic tie-breaking.

SubqueriesJoinsData WranglingGain DigitalTCSZest AI
Python or R Analysis LibrariesMedium
Practice
Practice drill

Count unique respondents by Python or R library and return the most commonly used libraries first.

analytics toolsData ManipulationData WranglingOklahoma City Thunder
2
Behavioral & Leadership7 questions · ~56 min
Owning an Analytical MistakeEasy

Tests self-awareness and ownership after an analytical mistake, including validation rigor, stakeholder communication, and learning.

CommunicationOwnershipDealing With AmbiguityDexis
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3
More topics4 questions · ~32 min
Data Quality in ETL PipelinesEasy

Approach for maintaining data quality and integrity across ETL pipelines.

IdempotencyData ModelingQualityDexis
Python Correlation FunctionEasy

Tests your ability to implement core statistical computations in Python.

CorrelationVarianceExpected ValueDexis
Finding Trends in User InteractionsMedium

Tests your ability to derive actionable insights from behavioral data using appropriate metrics.

Leading IndicatorsDiagnosisEngagement MetricsDexis
Useful Statistical MethodsEasy

Tests your practical statistical toolbox for extracting signal from data relevant to security analytics.

RegressionCorrelationHypothesis TestingDexis

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The finish line: interview-readyComplete all 14 questions plus 3 hands-on drills to finish this plan.