AWS Certified AI Practitioner (AIF-C01) — Question 309

Which option is an example of unsupervised learning?

Answer options

• A. A model that groups customers based on their purchase history
• B. A model that classifies images as dogs or cats
• C. A model that predicts a house’s price based on various features
• D. A model that learns to play chess by using trial and error

Correct answer: A

Explanation

Grouping customers based on purchase history is a clustering task, which is a classic example of unsupervised learning because it finds hidden patterns in unlabeled data. Classifying images (B) and predicting house prices (C) are examples of supervised learning, as they require labeled training data. Learning chess through trial and error (D) is an example of reinforcement learning.