Top 31
Prep plan
Updated weekly · Last refresh Aug 30

ABC Family Data Scientist Interview Questions

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

31questions
~4htotal time
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1
Machine LearningStart here. 7 questions · ~56 min
Bias-Variance in Model SelectionMedium

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

Cross-ValidationBias-Variance TradeoffRegularizationABC Family
Bias-Variance Tradeoff in Model ChoiceEasy

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

Cross-ValidationBias-Variance TradeoffRegularizationABC Family
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2
SQL & Data Manipulation5 questions + 3 drills · ~70 min
3
Product Sense3 questions · ~24 min
Investigate Engagement Drop After LaunchMedium

Tests structured debugging of behavioral changes using analytics and segmentation.

User NeedsPain PointsDiagnosisABC Family
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4
Statistics & Probability3 questions · ~24 min
Statistical Significance of RetentionMedium

Tests hypothesis testing setup and interpretation for retention changes.

Hypothesis TestingStatistical SignificanceP-ValuesABC Family
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5
Behavioral & Leadership9 questions · ~72 min
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6
More topics4 questions · ~32 min
Common Experimentation PitfallsMedium

Tests awareness of threats to validity and how to mitigate them in experimentation.

Network InterferenceNovelty EffectSample Ratio MismatchABC Family
Diagnose Sudden Active Viewer DropMedium

Tests metric instrumentation and root-cause thinking across the funnel.

Diagnosiskpi hierarchyEngagement MetricsABC Family
Imbalanced Binary Classification MetricsMedium

Tests metric selection aligned to class imbalance and business-relevant tradeoffs.

ClassificationPrecisionModel MetricsABC Family
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The finish line: interview-readyComplete all 31 questions plus 3 hands-on drills to finish this plan.