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Updated weekly · Last refresh Aug 30

Arrow Electronics Data Scientist Interview Questions

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

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1
SQL & Data ManipulationStart here. 4 questions + 2 drills · ~55 min
2
Machine Learning5 questions · ~44 min
Supervised vs Unsupervised LearningEasy

Explain how supervised and unsupervised learning differ, and ground the distinction in a practical ML example.

Unsupervised LearningFeature EngineeringBias-Variance TradeoffArrow Electronics
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3
A/B Testing & Experimentation3 questions · ~26 min
Discovery UI Metrics and GuardrailsMedium

Define primary and guardrail metrics for a discovery UI test, with power, MDE, and a pre-registered analysis plan.

ExperimentationGuardrail MetricsA/B TestingArrow Electronics
Pitfalls in Streaming Experiment AnalysisHard

Identify major online experiment pitfalls and explain how they can bias results in a streaming product A/B test.

Network InterferenceNovelty EffectSample Ratio MismatchArrow Electronics
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4
Behavioral & Leadership10 questions · ~87 min
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5
More topics6 questions · ~52 min
Prioritize Features for a New ProductMedium

A framework for deciding which features should ship first when building a new product.

Feature PrioritizationUser Needsproduct developmentArrow Electronics
Statistical Significance in Business DecisionsEasy

Explain what statistical significance means, how p-values and confidence intervals support decisions, and why significance alone is not enough.

Hypothesis TestingStatistical SignificanceP-ValuesArrow Electronics
Diagnose KPI Drop After ReleaseMedium

Diagnose a post-release KPI drop by separating instrumentation issues from real behavior changes and tracing the problem through the metric hierarchy.

KPILeading IndicatorsDiagnosisArrow Electronics
Responding to Underperforming ModelsMedium

Tests model evaluation, debugging, and iteration strategy to restore performance.

F1 ScoreAUC-ROCAccuracyArrow Electronics
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