Top 47
Prep plan
Updated weekly · Last refresh Aug 30

Dentsu International Data Scientist Interview Questions

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

47questions
~7htotal time
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1
SQL & Data ManipulationStart here. 6 questions + 2 drills · ~70 min
2
Machine Learning12 questions · ~100 min
Predict Customer ChurnMedium

Build a churn model that flags at-risk customers early using behavioral, billing, and support signals.

Feature EngineeringModel EvaluationSupervised LearningDentsu International
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3
Metrics6 questions · ~50 min
Diagnose a Performance DropHard

Investigate whether a performance decline is seasonal or a real product issue.

Leading IndicatorsDiagnosisTime SeriesDentsu International
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4
Statistics & Probability3 questions · ~25 min
Statistical Significance in Hypothesis TestingEasy

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

Hypothesis TestingData AnalysisStatistical SignificanceDentsu International
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5
Behavioral & Leadership12 questions · ~100 min
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6
More topics8 questions · ~67 min
Common Pitfalls in Experiment ResultsHard

Identify the main pitfalls that can distort A/B test interpretation and explain how to guard against them.

PeekingNovelty EffectSample Ratio MismatchDentsu International
Validate a Machine Learning ModelEasy

How to validate a machine learning model and interpret whether its metrics are trustworthy.

PrecisionAccuracyRecallDentsu International
Cloud Hosting Puzzle and CodingMedium

Assesses your basic understanding of cloud components and your ability to reason about common architectures.

cloud platformsDentsu International
Diagnose Sudden Campaign Performance DropsMedium

Evaluates your troubleshooting process for diagnosing drivers of sudden marketing performance changes.

campaign performanceDiagnosisDentsu International
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The finish line: interview-readyComplete all 47 questions plus 2 hands-on drills to finish this plan.