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Updated weekly · Last refresh Aug 30

Excelsior University Data Scientist Interview Questions

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

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~3htotal time
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1
Machine LearningStart here. 4 questions · ~34 min
2
Statistics & Probability3 questions · ~25 min
Statistical Significance in Hypothesis TestingEasy

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

Hypothesis TestingData AnalysisStatistical SignificanceExcelsior University
Correlation Versus Causation in AnalysisEasy

Explain why correlated customer behaviors do not by themselves prove a causal effect, and how you would tell the difference.

CorrelationHypothesis TestingCausal InferenceExcelsior University
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3
SQL & Data Manipulation3 questions + 3 drills · ~55 min
4
Behavioral & Leadership4 questions · ~34 min
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5
More topics4 questions · ~34 min
Common Pitfalls in Experiment ResultsHard

Identify the main pitfalls that can distort A/B test interpretation and explain how to guard against them.

PeekingNovelty EffectSample Ratio MismatchExcelsior University
Diagnosing Retention Metric DropsMedium

Tests your diagnostic thinking and ability to investigate drivers of retention changes.

KPIExcelsior University
Test a Customer Outreach StrategyMedium

Design an A/B test to determine whether a new customer outreach strategy improves response without harming customer experience.

ExperimentationGuardrail MetricsA/B TestingExcelsior University
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