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Expedia Group Data Scientist Interview Questions

The questions to prepare for a Expedia Group Data Scientist interview. Questions from real interview reports rank first. Updated daily.

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1
Machine LearningStart here. 12 questions · ~99 min
Purpose of Cross-ValidationMedium
Recently asked

Explain why cross-validation is used to estimate generalization and support model selection and tuning.

Cross-ValidationModel EvaluationSupervised LearningExpedia Group
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2
A/B Testing & Experimentation4 questions · ~33 min
Primary vs Guardrail MetricsEasy
Recently asked

Explain how a primary metric differs from a guardrail metric and how both are used in A/B test decisions.

ExperimentationGuardrail MetricsA/B TestingExpedia Group
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3
Metrics3 questions · ~25 min
Diagnose Conversion Drop Post LaunchMedium
Recently asked

Diagnose why conversion fell from 4.8% to 3.1% after a launch by breaking the metric across funnel steps, cohorts, and segments.

Funnel AnalysisConversion RateDiagnosisExpedia Group
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4
Statistics & Probability3 questions · ~25 min
Python, SQL, and A/B Test StatsMedium
Recently asked

Tests practical fluency across Python, SQL, and core experimentation statistics.

statisticsExpedia Group
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5
SQL & Data Manipulation4 questions + 2 drills · ~53 min
SQL and Pandas CompetencyMedium
Recently asked

Assesses SQL and pandas proficiency for data manipulation tasks.

interview processsqlbehavioralExpedia Group
Running Bookings by BrandMedium
Practice
Practice drill

Calculate daily and cumulative confirmed bookings for one Expedia hotel brand using PostgreSQL window functions.

Window FunctionsDate FunctionsJoinsExpedia Group
Fourth Highest Salary in SQLMedium
Practice
Practice drill

Identify every employee earning the fourth-highest distinct non-NULL salary using PostgreSQL ranking.

Data Manipulationsqldatabase queryingBlackRockExpedia GroupMSCI
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6
Product Sense3 questions · ~25 min
Diagnosing Booking Drops From RankingHard
Recently asked

Tests causal reasoning and debugging of product metric regressions using data.

Feature PrioritizationUser NeedsPain PointsExpedia Group
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7
More topics21 questions · ~173 min
Design a Travel Recommendation PipelineHard
Recently asked

Design an end-to-end travel recommendation system with retrieval, ranking, feature pipelines, and online feedback loops.

Feature StoreRetrievalRecommendation SystemsExpedia Group
Choosing Classification Evaluation MetricsEasy
Recently asked

Explain which classification metrics to use and how metric choice depends on the business objective and error tradeoffs.

PrecisionAccuracyRecallExpedia Group
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