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Date:         Fri, 16 Jun 2006 14:45:02 +0200
Reply-To:     "Kooij, A.J. van der" <KOOIJ@fsw.leidenuniv.nl>
Sender:       "SPSSX(r) Discussion" <SPSSX-L@LISTSERV.UGA.EDU>
From:         "Kooij, A.J. van der" <KOOIJ@fsw.leidenuniv.nl>
Subject:      ANOVA with Optimal Scaling technique and unequality of variance
Content-Type: text/plain; charset="iso-8859-1"

this should be: ... with nominal scaling level for INdependent variables (and numerical level for dependent), sorry.

________________________________

From: Kooij, A.J. van der Sent: Thu 15/06/2006 16:55 To: 'SPSSX-L@LISTSERV.UGA.EDU' Subject: RE: ANOVA with Optimal Scaling technique and unequality of variance

I guess you mean regression using optimal scaling (CATREG)? with nominal scaling level voor dependent variable this is ANOVA. No equal variances required.

Regards, Anita van der Kooij Data Theory Group Leiden University

-----Original Message----- From: SPSSX(r) Discussion [mailto:SPSSX-L@LISTSERV.UGA.EDU] On Behalf Of Sebastien Sent: 15 June 2006 13:42 To: SPSSX-L@LISTSERV.UGA.EDU Subject: ANOVA with Optimal Scaling technique and unequality of variance

Hi, I'm a PhD student in Ecology. I've got experiments that follow a two- way ANOVA design. My variances are unequal even after classic transformation (sqrt, Log). I would like to use ANOVA using the Optimal Scaling technique available on SPSS. Does ANOVA with optimal scaling require equal variances? Thank you. Sébastien.

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