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Updated weekly · Last refresh Oct 17

Slalom Data Scientist Interview Questions

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

50questions
~7htotal time
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1
A/B Testing & ExperimentationStart here. 3 questions · ~25 min
2
Model Evaluation6 questions · ~50 min
Assess Model Against Business GoalsHard

Framework for tying model metrics to business KPIs and identifying where performance gaps are hurting outcomes.

CalibrationAccuracyLiftSlalom
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3
SQL & Data Manipulation6 questions + 2 drills · ~70 min
4
Machine Learning7 questions · ~58 min
Describe an ML ProjectEasy

Walk through a past ML project with clear problem framing, modeling choices, evaluation, and measurable impact.

Cross-ValidationFeature EngineeringSupervised LearningSlalom
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5
Metrics6 questions · ~50 min
Diagnose a Performance DropHard

Investigate whether a performance decline is seasonal or a real product issue.

Leading IndicatorsDiagnosisTime SeriesSlalom
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6
Pipelines6 questions · ~50 min
Data Warehousing in PipelinesEasy

Explain what a data warehouse is and why it matters in analytics pipelines.

InfrastructureETLData ModelingSlalom
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7
More topics16 questions · ~133 min
Using Data to Influence DecisionsEasy

Share how you used data to shape a business decision, including the analysis, recommendation, and outcome.

User ResearchUser NeedsValue PropositionSlalom
Statistical Significance in Hypothesis TestingEasy

Explain what statistical significance means and why it matters when interpreting experimental or analytical results.

Hypothesis TestingData AnalysisStatistical SignificanceSlalom
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The finish line: interview-readyComplete all 50 questions plus 2 hands-on drills to finish this plan.