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Prep plan
Updated weekly · Last refresh Sep 20
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Diageo Data Scientist Interview Questions

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

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1
Behavioral & LeadershipStart here. 4 questions · ~38 min
Overcoming a High-Stakes SetbackMedium

Tests resilience and ownership under pressure, especially in ambiguous situations that require clear prioritization and measurable recovery.

personal growthresiliencechallengeDDiageo
Influencing a Skeptical StakeholderMedium

Tests influence without authority when a stakeholder resists a data-driven recommendation, including conflict handling and outcome ownership.

Influence Without AuthorityStakeholder ManagementCommunicationDDiageo
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2
More topics6 questions · ~58 min
SQL Window Functions Rolling AverageMedium
Practice

Calculate three-day rolling average sales by region using aggregation, joins, and PostgreSQL window functions.

Window FunctionssqlDDiageo
Diagnose Engagement DropHard

Identify the causes of a quarterly engagement decline through metric validation, decomposition, segmentation, and trend analysis.

MetricsDiagnosisuser engagementDDiageo
Define Metrics for a Customer TestHard

Define the primary metric, guardrails, and power for a customer-facing A/B test before deciding whether to ship.

ExperimentationGuardrail MetricsA/B TestingDDiageo
Interpreting P Values in TestingEasy

Explain what a p-value means in hypothesis testing and how it relates to statistical significance.

Hypothesis TestingStatistical SignificanceP-ValuesDDiageo
Define Metrics for New FeaturesMedium

Define a success metric for a new feature that captures real user value, not just raw usage.

MetricsFeature Prioritizationuser valueDDiageo
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 MismatchDDiageo

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Hands-on SQL practiceWrite and run real queries in the editor. 2 drills · ~20 min
The finish line: interview-readyComplete all 10 questions plus 2 hands-on drills to finish this plan.