On Tue, 12 Aug 2003, Torsten Franz asked: > as a basis for Multidimensional Scaling I use different matrices: a > distance matrix and a correlation matrix (Spearman). The results are > different, too. Why? I use STATISTICA.
Mainly because a correlation matrix is NOT a distance matrix, I should think. A distance matrix has 0 on the major diagonal and values elsewhere that get larger the more distant each pair of objects is; a correlation matrix has 1 on the major diagonal and values that get smaller the more distant each pair of objects is. Why would one not expect different results? ----------------------------------------------------------------------- Donald F. Burrill [EMAIL PROTECTED] 56 Sebbins Pond Drive, Bedford, NH 03110 (603) 626-0816 . . ================================================================= Instructions for joining and leaving this list, remarks about the problem of INAPPROPRIATE MESSAGES, and archives are available at: . http://jse.stat.ncsu.edu/ . =================================================================
