how are clusters tested in a research study what is a characteristic variable in cluster analysis what is characteristic data analysis what is the difference between a characteristic variable and a performance variable? what is the difference between clustering and cluster analysis how to do cluster analysis of iq cluster analysis definition which of these variables does the cluster analysis use cluster analysis to compare performance what is cluster analysis of data what is the characteristic of cluster analysis in statistics which of the following measures consists of a characteristic variable compared to a performance variable? is performance variable ordinal what measures the difference between a cluster and a performance variable? how to compare two clusters of data why is cluster analysis useful why do clustering analyses of variables work when you are performing a comparison, what is the difference between characteristic and performance measures? what is the difference between cluster and performance measures which of the following is a characteristic variable?