Date: Sun, 18 Mar 2012 12:35:20 -0400
Reply-To: Meg <ssrini24@YAHOO.COM>
Sender: "SPSSX(r) Discussion" <SPSSX-L@LISTSERV.UGA.EDU>
From: Meg <ssrini24@YAHOO.COM>
Subject: Determinant of Correlation Matrix is 0
I am running a factor analysis on scaled survey responses. There are 3
course sections that I am combining for the analysis; the determinant of the
correlation matrix is 0. I checked the correlations, none of them are > 0.9.
Data is highly significant, satisfies KMO conditions, Bartlett's test and
is superb for factor analysis. However, the determinant is 0 and that's
really unusual especially because if I don't combine the sections and run
them individually, the determinant is not 0. It's only when I combine the 3
sections that I end up with a determinant of 0.
I have more cases than variables; I really don't see anything that
perplexing about the data itself, but the 0 determinant is cause for concern.
Any reasons / pointers / advice on why this might be happening and what can
be done to resolve it would be much appreciated.
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