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Prep plan
Updated weekly · Last refresh Sep 21
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Sweetwater Data Scientist Interview Questions

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

16questions
~3htotal time
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1
A/B Testing & ExperimentationStart here. 3 questions · ~29 min
Design an Installment-Flow ExperimentMedium

Design an A/B test for a new checkout installment-flow feature, including metrics, power, guardrails, and a disciplined ship decision.

ExperimentationHypothesis TestingA/B TestingSSweetwater
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 MismatchSSweetwater
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2
Behavioral & Leadership7 questions · ~67 min
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3
More topics6 questions · ~57 min
SQL Average Sales Per MonthEasy
Practice

Calculate average sale amount by month using date filtering, grouping, and AVG aggregation.

sqlAggregationsSSweetwater
Investigate User Engagement DeclineMedium

Investigate a 15% engagement decline by decomposing the metric, isolating root causes, and proposing actions.

RetentionDiagnosisEngagement MetricsSSweetwater
Statistical Significance in PracticeMedium

Tests your understanding of inference and how you use it to support decisions.

Hypothesis TestingData AnalysisStatistical SignificanceSSweetwater
Metrics for Recommendation SuccessMedium

Assesses your ability to define actionable metrics for product recommendations.

product metricsSSweetwater
SQL Window Functions Rolling AverageMedium
Practice

Calculate three-day rolling average sales by region using aggregation, joins, and PostgreSQL window functions.

Window FunctionssqlSSweetwater
Ensuring Report AccuracyMedium

Evaluates your data validation, QA, and reporting accuracy practices.

data accuracydata validationreportingSSweetwater

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Hands-on SQL practiceWrite and run real queries in the editor. 1 drill · ~10 min
Consecutive Activity Days QueryMedium
Practice
Practice drill

Identify each user's consecutive website activity streaks using date arithmetic and SQL window functions.

Window FunctionsDate FunctionsData ManipulationIntuit Management ConsultancyChewyAllstate
The finish line: interview-readyComplete all 16 questions plus 1 hands-on drill to finish this plan.