LISTSERV at the University of Georgia
Menubar Imagemap
Home Browse Manage Request Manuals Register
Previous messageNext messagePrevious in topicNext in topicPrevious by same authorNext by same authorPrevious page (March 2012)Back to main SPSSX-L pageJoin or leave SPSSX-L (or change settings)ReplyPost a new messageSearchProportional fontNon-proportional font
Date:   Sun, 18 Mar 2012 12:53:28 -0700
Reply-To:   meteora100 <>
Sender:   "SPSSX(r) Discussion" <SPSSX-L@LISTSERV.UGA.EDU>
From:   meteora100 <>
Subject:   Re: Determinant of Correlation Matrix is 0
In-Reply-To:   <>
Content-Type:   text/plain; charset=us-ascii

The data are essentially scores obtained by using the semantic differential instrument (scores from 1-7) and the sections represent number of students (cases). So each student should have a score corresponding to 20 different items (variables) respectively. Raw data are transferred to SPSS and all I'm trying to do is to explore the number of factors emerging from the 20 variables. So, from the Scree plot and eigenvalue condition > 1, there are 3 factors extracted. However, it still does not explain why the determinant of the correlation matrix is 0 and I'm not sure if this data becomes inadmissible on those grounds, despite having satisfied the minimum criteria for factor analysis.

Another strange aspect is that the residual matrix does not have values close to 0 at all. In fact, some of the values are > 0.1 and a lot of the values are negative. So, has the factor extraction been inefficient or should some of the variables be removed?

The reliability statistics summary: Summary Item Statistics Mean Min. Max. Range Max / Min Variance N of Items Item Means 3.630 2.390 5.949 3.559 2.489 .813 20 Item Variances 1.743 1.240 2.338 1.098 1.886 .091 20 Inter-Item .015 -.567 .615 1.182 -1.085 .115 20 correlations

The highest square multiple correlation value is .624. None of them has a SMC of 1.00 with other items.

Thanks for your help!

-- View this message in context: Sent from the SPSSX Discussion mailing list archive at

===================== To manage your subscription to SPSSX-L, send a message to LISTSERV@LISTSERV.UGA.EDU (not to SPSSX-L), with no body text except the command. To leave the list, send the command SIGNOFF SPSSX-L For a list of commands to manage subscriptions, send the command INFO REFCARD

Back to: Top of message | Previous page | Main SPSSX-L page