juniorUnsupervised Learning
What is the elbow method?
Updated May 15, 2026
Short answer
The elbow method helps determine optimal number of clusters.
Deep explanation
It plots inertia vs cluster count and finds a point where improvement slows.
Real-world example
Choosing clusters for customer segmentation.
Common mistakes
- Expecting a clearly visible elbow always.
Follow-up questions
- What is inertia?
- Are there alternatives?