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Educational Testing Service (Ets) Interview Questions

The questions to prepare for Educational Testing Service (Ets) interviews, across all roles. Questions from real interview reports rank first. Updated weekly.

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1
PipelinesStart here. 6 questions · ~49 min
Data Quality in ETL PipelinesEasy

Approach for maintaining data quality and integrity across ETL pipelines.

IdempotencyData ModelingQualityEducational Testing Service (Ets)
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2
Metrics6 questions · ~49 min
Define Success for a ProjectEasy

Define what success means for a project using clear KPIs, a north star, and supporting metrics.

KPIsSuccess CriteriaDiagnosisEducational Testing Service (Ets)
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3
Product Sense6 questions · ~49 min
Align Product With User NeedsMedium

A framework for connecting user needs to business goals, then making product decisions with clear trade-offs and measurable outcomes.

User NeedsValue PropositionProduct VisionEducational Testing Service (Ets)
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4
Execution6 questions · ~49 min
Adapting to Changing RequirementsEasy

Describe how you adapted when project requirements or the expected format changed midstream.

Trade-offsRisk AssessmentScope ManagementEducational Testing Service (Ets)
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5
Coding6 questions · ~49 min
Implement Binary SearchEasy

Tests algorithm implementation skills and correctness reasoning.

RecursionArraysSearchingEducational Testing Service (Ets)
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6
Statistics & Probability6 questions · ~49 min
Validity and Reliability in ResearchHard

Assess whether research findings are valid and reliable using hypothesis testing, confidence intervals, and power checks.

Confidence IntervalsHypothesis TestingCausal InferenceEducational Testing Service (Ets)
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7
More topics14 questions · ~115 min
Ensuring Data QualityEasy

Tests your data validation practices, quality checks, and handling of unreliable inputs.

Data WranglingETLQualityEducational Testing Service (Ets)
Estimating Market Size for New ServiceHard

Tests your market sizing methodology using data, assumptions, and segmentation relevant to ETS offerings.

EstimationTAM/SAM/SOMMarket SizingEducational Testing Service (Ets)
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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Monthly Sales Trends by CategoryMedium
Practice
Practice drill

Aggregate monthly sales by product category and use LAG to calculate month-over-month changes.

InfrastructureToolsData WranglingTotal Wine & MoreInc.Benjamin Moore
Daily Session Funnel Conversion RatesHard
Practice
Practice drill

Calculate daily session-level funnel conversion rates using CTEs, CASE WHEN, and date functions.

User NeedsData WranglingAggregations
Resolve Conflicting Customer AttributesMedium
Practice
Practice drill

Use joins, CTEs, and row ranking to resolve conflicting customer profile values across ACME House systems.

JoinsData WranglingQualityRamsey SolutionsACME House
The finish line: interview-readyComplete all 50 questions plus 3 hands-on drills to finish this plan.