Finding groups (clustering) · FBIDS Excel Lab

Try it

Watch k-means work

Three groups are hiding in these dots. Alternate the two buttons.

Keep pressing Assign and Move centres until nothing changes.

Group A (circles)Group B (squares)Group C (triangles)

Round0

SSE (spread)–

Three centres (rings) were dropped at random. Press 1. Assign: every dot joins its nearest centre.