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Prep plan
Updated weekly · Last refresh Aug 30

Condé Nast Data Scientist Interview Questions

The questions to prepare for a Condé Nast Data Scientist interview. Questions from real interview reports rank first. Updated weekly.

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1
MetricsStart here. 4 questions · ~33 min
Define Campaign KPIs ClearlyEasy

Set campaign KPIs by linking business goals to funnel metrics, leading indicators, and outcome measures.

KPIsLeading IndicatorsDiagnosisCondé Nast
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2
A/B Testing & Experimentation3 questions · ~24 min
Pitfalls in Streaming Experiment AnalysisHard

Identify major online experiment pitfalls and explain how they can bias results in a streaming product A/B test.

Network InterferenceNovelty EffectSample Ratio MismatchCondé Nast
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3
Product Sense3 questions · ~24 min
Define Metrics for Homepage PersonalizationMedium

Tests product sense and measurement discipline for balancing growth with user experience and risk.

User NeedsMVPProduct VisionCondé Nast
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4
Behavioral & Leadership9 questions · ~73 min
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5
More topics10 questions · ~81 min
Supervised vs Unsupervised LearningEasy

Explain how supervised and unsupervised learning differ, and ground the distinction in a practical ML example.

Unsupervised LearningFeature EngineeringBias-Variance TradeoffCondé Nast
Data Quality in ETL PipelinesEasy

Approach for maintaining data quality and integrity across ETL pipelines.

IdempotencyData ModelingQualityCondé Nast
Design a Personalized Product RecommenderHard

Design an end-to-end product recommendation system for a large e-commerce marketplace with strict latency and freshness needs.

Feature StoreFeature DriftModel ServingCondé Nast
Evaluating Observed Lift SignificanceMedium

Explain how to test whether an observed experiment lift is real using hypothesis testing, p-values, and confidence intervals.

Confidence IntervalsStatistical SignificanceP-ValuesCondé Nast
Rank Users with SQL Window FunctionsMedium

Tests advanced SQL skills for cohort-based ranking and analytics.

Window FunctionsRankingGroup ByCondé Nast
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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
The finish line: interview-readyComplete all 29 questions plus 3 hands-on drills to finish this plan.