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Prep plan
Updated weekly · Last refresh Aug 30

World Bank Group Data Scientist Interview Questions

The questions to prepare for a World Bank Group Data Scientist interview. Questions from real interview reports rank first. Updated weekly.

23questions
~3htotal time
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1
Machine LearningStart here. 6 questions · ~48 min
Prevent Overfitting in ML ModelsEasy

Explain how to reduce overfitting using regularization, validation, and model selection.

Cross-ValidationBias-Variance TradeoffRegularizationWorld Bank Group
Feature Selection TechniquesMedium

Tests feature selection strategy and understanding of bias-variance tradeoffs.

Cross-ValidationFeature EngineeringRegularizationWorld Bank Group
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2
Pipelines4 questions · ~32 min
Data Quality in ML PipelinesMedium

Practical approach for maintaining data quality across ML ETL pipelines, orchestration, and repeatable data processing.

Data QualityETLData ModelingWorld Bank Group
Large Dataset Analysis PipelineEasy

Discuss a large-scale data analysis project with focus on the pipeline, tooling, and data quality approach.

ToolsData ModelingQualityWorld Bank Group
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3
Statistics & Probability8 questions · ~64 min
Choosing Statistical ModelsHard

Tests model selection reasoning and alignment with policy evaluation goals.

RegressionHypothesis TestingCausal InferenceWorld Bank Group
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4
More topics5 questions · ~40 min
Define Success for a ProjectEasy

Define what success means for a project using clear KPIs, a north star, and supporting metrics.

KPIsSuccess CriteriaDiagnosisWorld Bank Group
Handling Missing DataHard

Tests data quality handling and correct treatment of missingness.

Window FunctionsData WranglingCTEsWorld Bank Group
Expectations for the RoleEasy

Tests role alignment, motivation, and understanding of responsibilities for a Data Scientist.

User NeedsValue PropositionProduct VisionWorld Bank Group
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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 23 questions plus 3 hands-on drills to finish this plan.