08-10-2016 01:11 PM
The OUT= data set will have a variable, Cluster by default naming, indentifying each record's assigned cluster.
One simple way is to run Proc freq on the out= dataset and the cluster variable. That will show the number of clusters and how many records were assigned to each cluster.
08-11-2016 02:55 AM
That is a tough question have not been solved by now yet. You'd check the sas documentation of Cluster Analyst . In sas documentation ,one way is to use the kth nearest cluster. But My proposal is using Primary Component Analysis to get two Primary Component , And plot these high dimension data into two dimension scatter point based on these two Primary Component , and you can roughly see what number of clusters you should take.