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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 daily.

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1
CodingStart here. 5 questions · ~43 min
Implement Binary SearchEasy
Practice

Implement binary search to find a target value in a sorted array in O(log n) time.

Recursionbinary searchArraysEducational Testing Service (Ets)
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2
Pipelines6 questions · ~51 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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3
Metrics6 questions · ~51 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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4
Execution6 questions · ~51 min
Your Strengths and WeaknessesEasy

Give a specific, self-aware account of your strengths and weaknesses, supported by relevant examples and improvement actions.

Trade-offsSuccess CriteriaExecutionEducational Testing Service (Ets)
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5
Product Sense6 questions · ~51 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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6
Statistics & Probability6 questions · ~51 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 topics15 questions · ~128 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
Dashboard Design for User SegmentsMedium
Practice
Practice drill

Measure dashboard adoption by Johns Hopkins user segment using joins, aggregation, and reporting-period filters.

User NeedsJoinsData WranglingThe Johns Hopkins University
Managing the 'Everything' Dashboard RequestMedium
Practice
Practice drill

Create a unified Johns Hopkins University dashboard result by combining department activity, users, and targets.

User NeedsJoinsData WranglingThe Johns Hopkins University
The finish line: interview-readyComplete all 50 questions plus 3 hands-on drills to finish this plan.