Elbow Method: Choosing the Right Number of Clusters

Data Scientist 8 min min read Updated: Mar 05, 2026

Elbow Method: Choosing the Right Number of Clusters in Data Scientist

Topic 3 of 5

Elbow Method

Choosing K randomly can give poor results.

The elbow method plots the error vs cluster count and finds the point where improvement slows down.

This point looks like an elbow in the graph.

Next: Hierarchical Clustering

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