In the Variable Clustering report, the Cluster Summary table contains the following columns:
Cluster
The cluster identifier.
Number of Members
The number of variables in the cluster.
Most Representative Variable
The cluster variable that has the largest squared correlation with its cluster component.
Cluster Proportion of Variance Explained
The cluster’s proportion of variance explained by the first principal component among the variables in the cluster. If there is only one variable in the cluster, then this is 1. This statistic is based only on variables within the cluster rather than on all variables.
Total Proportion of Variation Explained
The overall proportion of variance explained by the cluster component. This is equivalent to using only the variables within each cluster to calculate the first principal component.
A note beneath the table gives the total proportion of variation explained by all the cluster components.