Overview for Cluster K-Means

Use Cluster K-Means to group observations into clusters that share common characteristics. This method is appropriate when you have sufficient information to make good starting cluster designations for the clusters.

For example, a business analyst uses cluster K-means to classify 22 successful small-to-medium size manufacturing companies into meaningful groups for future analyses. To start the partition process, the analyst divides the companies into three initial groups: established, mid-growth, and young.

Cluster K-means uses a non-hierarchical procedure to group observations. Therefore, in the clustering process, two observations might be split into separate clusters after they are joined together.

Where to find this analysis

To perform a cluster K-means analysis, choose Stat > Multivariate > Cluster K-Means.

When to use an alternate analysis

  • If you want to group observations but you do not have any initial information on how to form the groups, use Cluster Observations.
  • If you want to group variables, instead of observations, use Cluster Variables.