Hello!
We are confused. As we understand, SPSS and Systat are both products
of SPSS Inc. So, we thought that their way to do analysis is identical
also. It seems that this was a stupid thought.
Problem: In Principal Component Analysis (Varimax-rotation) both
programs produce seven factors and all loadings are identical
regarding their power. But, one factor produced by Systat has inverse
loadings compared to what SPSS produces:
Systat SPSS
.787 -.787
-.701 .701
.666 -.666
This is a real problem because we use factor scores based on these
loadings.
I would be very grateful, if someone can tell us what is going
(wr)on(g)....
AV