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Updated weekly · Last refresh Aug 30

Thumbtack Data Analyst Interview Questions

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

32questions
~4htotal time
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1
SQL & Data ManipulationStart here. 5 questions + 3 drills · ~70 min
Customer Orders: LEFT vs INNER JOINEasy

Explain how INNER JOIN and LEFT JOIN differ, and when to use each for matched-only versus all-left-row analysis.

JoinsData WranglingGroup ByThumbtack
Deduplicate Requests with Window FunctionsMedium

Tests SQL window functions for deduplication and data quality in marketplace logs.

Window FunctionsReconciliationdata integrityThumbtack
SQL Retention Over Six MonthsHard
Practice
Practice drill

Calculate six-month Thumbtack professional retention using CTEs, date filtering, joins, and cohort aggregation.

sql queryData AnalysisThumbtack
SQL for MoM RetentionHard
Practice
Practice drill

Calculate cohort month-over-month retention for Thumbtack service professionals using CTEs, date truncation, joins, and aggregation.

Window FunctionsDate FunctionsRetentionThumbtack
SQL Window Functions Moving AverageMedium
Practice
Practice drill

Calculate a three-day moving average of active-client revenue using aggregation and SQL window functions.

Window FunctionsData AnalysissqlAAreteMITREGlassdoor
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2
Metrics6 questions · ~48 min
Diagnose Matching Rate DropMedium

Tests structured troubleshooting using funnel metrics, segmentation, and data validation.

Leading IndicatorsDiagnosisThumbtack
Competitor Impact on RetentionMedium

Tests metrics design and causal thinking to assess competitive impact on retention.

Retentionmarket shareDiagnosisThumbtack
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3
Statistics & Probability3 questions · ~24 min
Explain Linear Regression and Model MeasurementMedium

Assesses communication of statistics concepts and your approach to evaluating model performance.

linear regressionModel EvaluationThumbtack
Describe Linear Regression SimplyMedium

Assesses ability to explain core statistics concepts clearly to non-technical stakeholders.

linear regressionCommunicationThumbtack
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4
Behavioral & Leadership16 questions · ~128 min
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5
More topics2 questions · ~16 min
Ranking Test for App DiscoveryMedium

Design an A/B test for a new app-store ranking algorithm, including primary metrics, guardrails, sample size, and launch criteria.

MDEGuardrail MetricsSample Ratio MismatchThumbtack
Pricing Model Viability for ThumbtackHard

Tests product sense and financial modeling tradeoffs for marketplace monetization changes.

Pricing StrategyValue PropositionProduct VisionThumbtack

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The finish line: interview-readyComplete all 32 questions plus 3 hands-on drills to finish this plan.