K-Means
Fit centroids, compare k, describe original-unit profiles and test the limits of K-Means geometry.
Helpful prior knowledge: Distance depends on scale and context. These links are guidance, not locks.
Follow teaches the idea; Change asks you to make a choice; Transfer changes the context. Apply, reviews and checkpoints appear where the existing lessons provide them. Go Further lessons are optional.
Lessons in this model deck
Start with the first core lesson →
K-Means assigns points to centroids
Understand centroids, distances and assignments.
25–40 min · 4 practicesChoosing k requires evidence and judgement
Combine compactness, separation and useful interpretation.
18–25 min · 4 practicesDescribe clusters in meaningful units
Use sizes and original-unit profiles with named features.
12–18 min · 3 practicesK-Means retrieval
Retrieve earlier concepts before combining them.
15–20 min · 3 practicesWhen K-Means geometry misleads
Recognise initialisation, scale and shape limitations.
12–18 min · 3 practicesBrowse all Clustering and Discovery lessons, reviews and checkpoints →