Top 50
Prep plan
Updated weekly · Last refresh Aug 30
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DXC Data Scientist Interview Questions

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

50questions
~7htotal time
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1
SQL & Data ManipulationStart here. 7 questions + 2 drills · ~79 min
2
Model Evaluation5 questions · ~42 min
Evaluate Whether a Model Is OverfittingMedium

How to tell if a model is overfitting by comparing training and validation behavior.

Cross-ValidationAUC-ROCAccuracyDDXC
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3
Machine Learning8 questions · ~68 min
Machine Learning Framework ExperienceEasy

Discuss your hands-on experience with machine learning frameworks and how you use them for training, preprocessing, and evaluation.

Hyperparameter TuningNeural NetworksDeep LearningDDXC
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4
A/B Testing & Experimentation4 questions · ~34 min
Design Test for New FeatureMedium

Design an A/B test for a new platform feature, including success metrics, power, guardrails, and a clear ship decision.

experiment designfeature evaluationA/B TestingDDXC
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5
Statistics & Probability7 questions · ~59 min
Statistical Project WalkthroughMedium

Walk through a past project using hypothesis testing and regression to turn data into a decision.

RegressionHypothesis TestingStatistical SignificanceDDXC
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6
Metrics5 questions · ~42 min
Diagnose a Metric Drop After LaunchMedium

Investigate why a key KPI moved the wrong way after a product change and separate signal from noise.

Lagging IndicatorsLeading IndicatorsDiagnosisDDXC
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7
More topics14 questions · ~119 min
Design a Travel Recommendation PipelineHard

Design an end-to-end travel recommendation system with retrieval, ranking, feature pipelines, and online feedback loops.

Feature StoreRetrievalRecommendation SystemsDDXC
Cloud Platform Experience for PipelinesMedium

Describe practical experience building pipelines on AWS, including orchestration, security, and data quality.

InfrastructureETLData ModelingDDXC
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The finish line: interview-readyComplete all 50 questions plus 2 hands-on drills to finish this plan.