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Updated weekly · Last refresh Aug 30

GEP Data Analyst Interview Questions

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

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1
Statistics & ProbabilityStart here. 3 questions · ~26 min
Missing Values and Outliers Before ModelingMedium

Tests end-to-end preprocessing thinking and choices that affect model quality.

RegressionCorrelationData WranglingGEP
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2
Metrics4 questions · ~34 min
Identify Sales Trends Over TimeMedium

Tests time-series thinking, metric selection, and interpretation of trends for business decisions.

Leading IndicatorsDiagnosisTime SeriesGEP
Procurement Dashboard MetricsMedium

Tests metrics design, stakeholder needs, and ability to translate procurement goals into KPIs.

North Star MetricKPIsDiagnosisGEP
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3
Behavioral & Leadership11 questions · ~94 min
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4
More topics6 questions · ~51 min
SQL Min and Max Without SubqueriesMedium
Practice

Find all GEP employees with the highest or lowest non-null salary using self-joins, CASE expressions, and no subqueries.

sqlGEP
Data Quality in ETL PipelinesEasy

Approach for maintaining data quality and integrity across ETL pipelines.

IdempotencyData ModelingQualityGEP
Motivation for the Data Analyst RoleMedium

Tests motivation and fit for sustained performance in analytical work.

Jobs to Be DoneUser NeedsValue PropositionGEP
Run an A/B Test for ReportingMedium

Tests experimental design, metrics selection, and validity considerations for product reporting changes.

Guardrail MetricsSample SizeA/B TestingGEP
Gather and Prioritize User FeedbackEasy

How to collect user feedback and turn it into product improvements.

User ResearchUser NeedsPain PointsGEP
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Hands-on SQL practiceWrite and run real queries in the editor. 2 drills · ~20 min
Second Highest Without AggregatesHard
Practice
Practice drill

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

SubqueriesRankingSelf-JoinsCredit GenieDevoteamCisco Restaurant + Bar
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
The finish line: interview-readyComplete all 24 questions plus 2 hands-on drills to finish this plan.