ocr: Cluster Analysis Clusters cases according to their values on any number of variables, and creates and opens a cluster - tree - diagram. The tree diagram displays individual points in a column on the left. As you move from left to right the clusters increase in size and decrease in numbers. The Plot Tools work in this diagram just as they do in any other plot; you can identity, select, and plot points with special symbols. Data Desk clusters based on the cuclidean distances between pairs ofj points. The only limit to the number of cases that can be clustered ist the memory available to Data Des ...