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Updated weekly · Last refresh Oct 17

B Lab Global Data Analyst Interview Questions

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

29questions
~4htotal time
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1
SQL & Data ManipulationStart here. 3 questions + 3 drills · ~54 min
Handling Missing and Dirty SQL DataMedium

Explain how to profile, clean, and standardize missing or dirty data before analysis.

Data WranglingCase WhenQualityB Lab Global
Standardize Data MeaningMedium

Evaluates your understanding of data standardization concepts and why they matter for analysis.

B Lab Global
SQL Schema for Certification HistoryHard

Tests advanced data modeling for time-based history and certification-cycle tracking.

schema designData ModelingB Lab Global
SQL: Weekly Volume and Time to CertMedium
Practice
Practice drill

Calculate weekly application volume, approval rate, and average certification time with PostgreSQL date functions and aggregations.

Date FunctionsGroup ByCase WhenB Lab Global
SQL: Reconcile Certification RecordsHard
Practice
Practice drill

Reconcile required certifications against stored records and flag missing, duplicate, invalid, or unexpected data.

missing valuesnull handlingJoinsB Lab Global
Compare Weekly User Activity TrendsMedium
Practice
Practice drill

Aggregate user activity by week, then use LAG to compare sessions and watch time versus the prior active week.

Window FunctionsLag/LeadDate FunctionsB Lab GlobalTapadScale
2
Metrics5 questions · ~40 min
Dashboard for Certification TrendsMedium

Tests dashboard design, metric definition, and usability for internal decision-making.

KPIdashboard designB Lab Global
Regional Certification Trend AnalysisMedium

Tests analytical approach to segmentation, trend detection, and interpretation.

Cohort AnalysisB Lab Global
Measuring Sector Performance in B Impact AssessmentMedium

Tests metric design and evaluation methods for sector-level performance.

KPIperformance analysisB Lab Global
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3
Behavioral & Leadership19 questions · ~152 min
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4
More topics2 questions · ~16 min
Choosing a New Store LocationMedium

Evaluates your ability to use data to drive store expansion decisions at H-E-B.

B Lab Global
Data Integrity Across Certification EcosystemHard

Tests data governance, integrity controls, and scalable pipeline design for certification data.

scalabilitydata integrityQualityB Lab Global

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