-represents the “multivariate dissimilarity” of X & Y
-Uses the “greatest univariate difference” to represent the multivariate dissimilarity.
-This is a “similarity index” –all the other measures we have looked at are “dissimilarity indices”
-Using correlations ignores level differences between cases –looks only at shape differences (see next page)
-It is important to carefully consider how you want to define “profile similarity” when clustering –it will likely change the results you get.