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Updated weekly · Last refresh Oct 17

Amazon Web Services Applied Scientist Interview Questions

The questions to prepare for a Amazon Web Services Applied Scientist interview. Questions from real interview reports rank first. Updated daily.

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1
CodingStart here. 4 questions · ~34 min
Solving an Array Duplicate ProblemEasy
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Find each value appearing more than once in an array using a hash set.

Hash TablesdeduplicationArraysAmazon Web Services
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2
System Design8 questions · ~69 min
Design a Real-Time Prediction PlatformHard
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Design a low-latency ML system for real-time predictions with online features, model serving, and monitoring.

Feature StoreFeature DriftModel ServingAmazon Web Services
Deploy a Cloud ML Inference SystemMedium
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Design a cloud ML deployment system for a security product, covering training, serving, updates, and production monitoring.

InfrastructureFeature DriftModel ServingAmazon Web Services
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3
Machine Learning12 questions · ~103 min
Feature Selection for Supervised ModelsMedium
Recently asked

Explain a practical feature selection process using validation, regularization, and model-based importance to improve generalization.

Cross-ValidationFeature EngineeringRegularizationAmazon Web Services
Handling Missing Values in MLEasy
Recently asked

Explain practical strategies for handling missing values in a supervised learning workflow, from diagnosis to modeling and validation.

Cross-ValidationFeature EngineeringRegularizationAmazon Web Services
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4
Model Evaluation3 questions · ~26 min
Chatbot Metrics for CustomersHard
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Select and justify metrics for evaluating an Amazon Web Services customer service chatbot across quality, completion, safety, and user experience.

performance evaluationevaluation metricsPrecisionAmazon Web Services
Debugging Underperforming ModelsMedium
Recently asked

Tests your diagnostic workflow for identifying data, modeling, and evaluation issues.

PrecisionAccuracyRecallAmazon Web Services
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5
Behavioral & Leadership10 questions · ~86 min
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6
More topics1 question · ~9 min
Interpreting P Values in TestingEasy
Recently asked

Explain what a p-value means in hypothesis testing and how it relates to statistical significance.

Hypothesis TestingStatistical SignificanceP-ValuesAmazon Web Services
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