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Updated weekly · Last refresh Aug 30

Compass Data Analyst Interview Questions

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

24questions
~3htotal time
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1
MetricsStart here. 3 questions · ~24 min
Analyze a Successful CampaignEasy

Describe how you would evaluate a successful marketing campaign using funnel KPIs, conversion, and ROI.

KPIsDiagnosisEngagement MetricsCompass
Choose Metrics for Business ProblemsMedium

Tests problem framing, metric selection, and alignment to business goals.

KPIsLeading IndicatorsDiagnosisCompass
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2
SQL & Data Manipulation9 questions + 3 drills · ~102 min
SQL with Subquery or CTEMedium

Tests ability to structure multi-step SQL logic using subqueries or CTEs.

SubqueriesJoinsCTEsCompass
Handling Missing DataEasy

Tests practical data cleaning decisions and impact on downstream analysis quality.

Data WranglingCase WhenAggregationsCompass
Excel Reconciliation WorkflowEasy

Tests practical Excel skills for data validation and reconciliation in a real workflow.

JoinsData WranglingAggregationsCompass
Top Customers by Sales RevenueEasy
Practice
Practice drill

Use GROUP BY and SUM to rank the top 10 customers by total revenue from a single sales table.

RankingGroup ByAggregationsHousecall ProEquifaxXYZ
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
Unify CRM and Google Analytics ViewHard
Practice
Practice drill

Merge CRM orders with GA events via an identity map to build a customer-level view using joins, window functions, and monthly rollups.

SubqueriesJoinsData WranglingArtefact
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3
Behavioral & Leadership9 questions · ~72 min
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4
More topics3 questions · ~24 min
Significance of A/B TestingEasy

Explain why A/B testing matters in marketing analytics and how it supports causal, metric-driven campaign decisions.

ExperimentationGuardrail MetricsA/B TestingCompass
Analyze Customer ComplaintsMedium

Tests ability to translate messy customer feedback into actionable insights and metrics.

User NeedsPain PointsUse CasesCompass
Toyota Production System for Data QualityMedium

Tests understanding of process improvement concepts and applying quality thinking to data.

ToolsData ModelingQualityCompass

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The finish line: interview-readyComplete all 24 questions plus 3 hands-on drills to finish this plan.