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Updated weekly · Last refresh Sep 25

NORC at the University of Chicago Data Scientist Interview Questions

The questions to prepare for a NORC at the University of Chicago Data Scientist interview. Questions from real interview reports rank first. Updated daily.

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1
A/B Testing & ExperimentationStart here. 5 questions · ~43 min
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 TestingNORC at the University of Chicago
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 MismatchNORC at the University of Chicago
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2
Statistics & Probability3 questions · ~26 min
Model Selection for Binary OutcomesMedium

Evaluates model choice and assumptions for classification problems.

model selectionNORC at the University of Chicago
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3
Product Sense3 questions · ~26 min
Evaluate New Survey FeatureMedium

Evaluates how you define success criteria and measurement for product changes.

feature evaluationNORC at the University of Chicago
Design Engagement MetricsMedium

Evaluates metric design for engagement measurement and interpretability.

user engagementNORC at the University of Chicago
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4
Behavioral & Leadership4 questions · ~35 min
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5
More topics4 questions · ~35 min
SQL for Running AverageMedium
Practice

Calculate five-day rolling service averages using daily aggregation, a calendar join, and PostgreSQL window functions.

queriessqlNORC at the University of Chicago
Diagnose Drops in Key MetricsMedium

Tests your approach to metric monitoring, debugging, and investigation.

performance metricsAnalysisNORC at the University of Chicago
Optimizing Large Analytical SQL QueriesHard

Explain how to diagnose and optimize a slow analytical query on a multi-terabyte event table using SQL-aware tuning strategies.

JoinsData WranglingCTEsNORC at the University of Chicago
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Hands-on SQL practiceWrite and run real queries in the editor. 2 drills · ~20 min
The finish line: interview-readyComplete all 19 questions plus 2 hands-on drills to finish this plan.