Dataford
Top 50
Prep plan
Updated weekly · Last refresh Aug 30

Amazon Services Data Scientist Interview Questions

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

50questions
~7htotal time
Track your progressSign up free to work through all 50 questions and resume where you left off.
Start practicing free →
1
Machine LearningStart here. 7 questions · ~57 min
Bias-Variance Tradeoff in PracticeMedium

Explain the bias-variance tradeoff and how it guides model choice, regularization, and generalization performance.

Cross-ValidationBias-Variance TradeoffRegularizationAmazon Services
More Machine Learning questions with a free account
2
Model Evaluation4 questions · ~32 min
Explain Core Classification MetricsEasy

Explain precision, recall, F1-score, and ROC-AUC for a classification model.

F1 ScorePrecisionAUC-ROCAmazon Services
More Model Evaluation questions with a free account

Sign up to see every question

Create a free account to unlock this list and practice real interview questions.

Get my prep plan
3
SQL & Data Manipulation6 questions + 3 drills · ~78 min
Window Ranking in Ticket QueuesMedium

Explain SQL window functions and when to use ROW_NUMBER() versus DENSE_RANK() for ranked ticket analysis.

Window FunctionsRankingrow_numberAmazon Services
Calculate 30-Day User RetentionHard
Practice
Practice drill

Use CTEs, joins, and date filtering to calculate 30-day retention by signup cohort from login and feature usage data.

Window FunctionsDate FunctionsAggregationsCurefitReachMobiIndeed
7-Day Rolling Active UsersMedium
Practice
Practice drill

Compute daily active users and a 7-day rolling average using a CTE, distinct counts, and window functions.

Window FunctionsDate FunctionsRunning TotalsMetaSpotifyMeta IT
SQL for Missed ProductivityHard
Practice
Practice drill

Use joins, aggregation, and CASE expressions to find Amazon Services shifts missing hourly productivity thresholds over 30 days.

sql queryData AnalysisAmazon Services
More SQL & Data Manipulation questions with a free account
4
Metrics6 questions · ~48 min
Prove Product Success With KPIsMedium

Set up a KPI framework that links product usage signals to longer-term business outcomes and shows whether a solution is working.

KPIsSuccess CriteriaEngagement MetricsAmazon Services
More Metrics questions with a free account
5
Pipelines7 questions · ~57 min
Data Quality in ETL PipelinesEasy

Approach for maintaining data quality and integrity across ETL pipelines.

IdempotencyData ModelingQualityAmazon Services
More Pipelines questions with a free account
6
Statistics & Probability6 questions · ~48 min
Determining A/B Test SignificanceMedium

Explain how to evaluate whether an A/B test result is statistically significant and how to interpret the result.

marketing experimentStatistical SignificanceAnalysisAmazon Services
More Statistics & Probability questions with a free account
7
More topics14 questions · ~113 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 MismatchAmazon Services
Work Backward to Build SolutionMedium

Tests your end-to-end approach from customer requirements to data solution design.

Jobs to Be DoneUser NeedsPain PointsAmazon Services
More questions with a free account
The finish line: interview-readyComplete all 50 questions plus 3 hands-on drills to finish this plan.