Dataford
Top 18
Prep plan
Updated weekly · Last refresh Aug 30

Tech(x) Data Analyst Interview Questions

The questions to prepare for a Tech(x) Data Analyst interview. Questions from real interview reports rank first. Updated weekly.

18questions
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1
SQL & Data ManipulationStart here. 5 questions + 2 drills · ~66 min
Top 5 Users by ActivityMedium
Practice

Identify Tech(x)'s five most active users with a date-filtered LEFT JOIN and grouped activity counts.

sql queryData Analysisuser engagementTech(x)
Optimizing Slow Sales QueriesEasy

Explain how to diagnose and optimize a slow SQL query using execution plans, indexing, and simpler query patterns.

JoinsData WranglingAggregationsTech(x)
Handling Unexpected Join DuplicatesMedium

Evaluates your debugging approach for join logic and data integrity in SQL.

Problem Solvingdata integrityTech(x)
SQL Funnel Drop-Off AnalysisHard
Practice
Practice drill

Measure sequential Airbnb Homes funnel engagement and drop-off using CTEs, joins, aggregation, and LAG.

sql queryData Analysisuser engagementAirbnb
Top 10 Users by Watch TimeMedium
Practice
Practice drill

Rank the top 10 Disney+ Hotstar users in India by January watch time using a CTE, LEFT JOIN, and aggregation.

sql queryData Analysisuser engagementDDisney+HotStar
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2
Statistics & Probability4 questions · ~36 min
Statistical Significance in Hypothesis TestingEasy

Explain what statistical significance means and why it matters when interpreting experimental or analytical results.

Hypothesis TestingData AnalysisStatistical SignificanceTech(x)
Two Draws Without ReplacementEasy

Compute the probability that two balls drawn without replacement are different colors.

SamplingprobabilityConditional ProbabilityTech(x)
Conditional Probability for RetentionMedium

Tests your ability to reason about conditional probability in user retention contexts.

Data Analysisuser retentionConditional ProbabilityTech(x)
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3
Behavioral & Leadership8 questions · ~73 min
Balancing Competing Stakeholder RequestsMedium

Tests prioritization under pressure across stakeholders, with emphasis on trade-off judgment, influence, and clear communication.

Stakeholder ManagementCommunicationOwnershipTech(x)
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4
More topics1 question · ~9 min
Design Test for New FeatureMedium

Design an A/B test for a new platform feature, including success metrics, power, guardrails, and a clear ship decision.

experiment designfeature evaluationA/B TestingTech(x)
The finish line: interview-readyComplete all 18 questions plus 2 hands-on drills to finish this plan.