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Inc. In Data Analyst Interview Questions

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

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1
SQL & Data ManipulationStart here. 5 questions + 3 drills · ~70 min
Troubleshooting Missing Rows with JoinsEasy

Explain how INNER JOIN and LEFT JOIN affect missing records and when to use each while debugging data mismatches.

SubqueriesJoinsData WranglingInc. In
Optimizing Slow SQL JoinsHard

Tests your SQL performance troubleshooting skills and ability to improve query efficiency.

SubqueriesPerformance TuningJoinsInc. In
CLT and SQL TasksMedium

Evaluates understanding of CLT and ability to apply it alongside SQL and regex for data work.

sqlInc. In
SQL Duplicate DetectionEasy
Practice
Practice drill

Find duplicate customer profiles by grouping on identifying fields and returning only repeated records.

Group ByHavingAggregationsAdtalem Global EducationAmerisave MortgageCitrine Informatics
7-Day Rolling Active UsersMedium
Practice
Practice drill

Compute daily active users and a 7-day rolling average using a CTE, distinct counts, and window functions.

Window FunctionsDate FunctionsRunning TotalsMetaSpotifyMeta IT
Window Functions and Top SalariesEasy
Practice
Practice drill

Use ROW_NUMBER and a CTE to return the three highest-paid employees in each Inc. In department.

Window FunctionsInc. In
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2
Behavioral & Leadership9 questions · ~72 min
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3
More topics5 questions · ~40 min
Critical Metrics for Product LaunchMedium

Choose the most important launch metrics, balancing early signals, long-term outcomes, and a clear KPI hierarchy.

KPIsConversion RateLeading IndicatorsInc. In
Handling Outliers and Missing DataMedium

Tests your data cleaning approach and how you preserve signal before modeling.

SamplingBiasData WranglingInc. In
Designing A/B Tests on Inc. In HomepageHard

Tests your experimental design, metrics thinking, and statistical significance approach for product decisions.

experiment designStatistical SignificanceA/B TestingInc. In
Improve Your Favorite ProductEasy

Tests product thinking, prioritization, and ability to articulate user value and tradeoffs.

product analysisUser Needsuser feedbackInc. In
Regression for Non-Technical StakeholdersMedium

Tests your ability to communicate statistical ideas clearly to business partners.

RegressionCommunicationtechnicalInc. In

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