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Updated weekly · Last refresh Aug 30

ABB Data Scientist Interview Questions

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

21questions
~3htotal time
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1
Statistics & ProbabilityStart here. 4 questions · ~34 min
2
SQL & Data Manipulation3 questions + 3 drills · ~55 min
3
Behavioral & Leadership4 questions · ~34 min
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4
More topics10 questions · ~84 min
Bagging vs Boosting ExplainedMedium

Explain how bagging and boosting differ, and identify a representative algorithm for each ensemble method.

Ensemble Methodsmodel trainingSupervised LearningABB
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 TestingABB
Evaluate Whether a Model Is OverfittingMedium

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

Cross-ValidationAUC-ROCAccuracyABB
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 IndicatorsDiagnosisABB
Real-Time Factory Anomaly DetectionHard

Tests system design skills for streaming anomaly detection, latency constraints, and monitoring.

system designanomaly detectionreal-time dataABB
Designing an Engagement MetricMedium

Tests product thinking and metric design for meaningful, actionable engagement measurement.

product metricsdesignuser engagementABB
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