Why is K means clustering used?

Related questions

1. What does K mean?
2. How is Knn different from K means clustering?
3. What are the advantages and disadvantages of K means clustering?
4. Does K mean supervised?
5. Why K means unsupervised?
6. How does agglomerative clustering work?
7. What is the difference between K means and hierarchical clustering?
8. How does hierarchical clustering work?
9. What is a good clustering?
10. What is the difference between hierarchical and nonhierarchical clustering methods?

Tags

1. #categories
2. #clustering
3. #clusters
4. #means
5. #centroids
6. #algorithm
7. #unlabeled
8. #learning
9. #which
10. #results
11. #defined
12. #groups
13. #unsupervised
14. #label
15. #introduction
16. #without