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Updated weekly · Last refresh Aug 30

Luxoft India Data Scientist Interview Questions

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

50questions
~7htotal time
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1
PipelinesStart here. 4 questions · ~32 min
2
Product Sense3 questions · ~24 min
Define Metrics for New FeaturesMedium

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

MetricsFeature Prioritizationuser valueLuxoft India
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3
Model Evaluation6 questions · ~48 min
Choose the Right Evaluation MetricMedium

Choose the best metric for a business goal and explain the trade-offs between precision, recall, F1, and threshold choice.

F1 ScorePrecisionAccuracyLuxoft India
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4
Machine Learning12 questions · ~97 min
Bias-Variance Tradeoff in Model ChoiceEasy

Explain how the bias-variance tradeoff guides algorithm selection and generalization performance.

Cross-ValidationBias-Variance TradeoffRegularizationLuxoft India
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5
A/B Testing & Experimentation3 questions · ~24 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 TestingLuxoft India
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6
SQL & Data Manipulation7 questions + 3 drills · ~87 min
7
More topics15 questions · ~121 min
First Checks for Metric DropsEasy

Outline the first checks to diagnose a sudden drop in a core product metric, starting with data quality, scope, and decomposition.

Lagging IndicatorsLeading IndicatorsDiagnosisLuxoft India
Deploy a Cloud ML Inference SystemMedium

Design a cloud ML deployment system for a security product, covering training, serving, updates, and production monitoring.

InfrastructureFeature DriftModel ServingLuxoft India
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The finish line: interview-readyComplete all 50 questions plus 3 hands-on drills to finish this plan.