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Updated weekly · Last refresh Aug 30

dunnhumby Research Scientist Interview Questions

The questions to prepare for a dunnhumby Research Scientist interview. Questions from real interview reports rank first. Updated weekly.

20questions
~3htotal time
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1
Machine LearningStart here. 5 questions · ~42 min
Retail Campaign EvaluationHard

Assesses ability to evaluate retail campaigns with appropriate metrics and improvement thinking.

case studydunnhumby
Decision Trees BasicsMedium

Tests foundational ML understanding of decision trees and training setup.

Supervised LearningDecision Treesdunnhumby
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2
Coding3 questions · ~25 min
Retail Case Study CodingMedium

Tests practical coding approach for retail analytics case work.

case studydunnhumby
String Operations and Data StructuresMedium

Tests coding fundamentals with strings and data structure reasoning.

Data Structuresdunnhumby
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3
Statistics & Probability5 questions · ~42 min
Python, SQL, and Project SkillsMedium

Assesses ability to connect technical skills to real project outcomes.

statisticssqlpythondunnhumby
Linear Regression AssumptionsMedium

Assesses statistical understanding and practical validation of linear regression assumptions.

linear regressionassumptionsdunnhumby
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4
Behavioral & Leadership5 questions · ~42 min
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5
More topics2 questions · ~17 min
Word2Vec MechanicsMedium

Evaluates understanding of NLP representation learning and embedding intuition.

dunnhumby
ROC AUC and Model MetricsMedium

Tests understanding of model evaluation metrics and comparison across model types.

Regressiondunnhumby

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