=========================================================================
Date:         Sun, 16 Jul 2006 13:42:57 -0400
Reply-To:     Martin Sherman <MSherman@loyola.edu>
Sender:       "SPSSX(r) Discussion" <SPSSX-L@LISTSERV.UGA.EDU>
From:         Martin Sherman <MSherman@loyola.edu>
Subject:      Re: Levene-Test for related samples?
Comments: To: Michael Schuler <Amanatius@web.de>
In-Reply-To:  <134544244@web.de>
Content-Type: text/plain; charset=US-ASCII

From David Howell's Stat Text.

 t = [(F-1)*Sqrt(n-2)]/[(2*Sqrt(F(1-r squared)))].

HTH,

df for this t is n-2.
F = largest variance divided by the smallest variance
r = correlation between the matched or pair scors.
Check t for sign. If it is not significant than you can safely conclude
that you have met the equal variances assumption for the dependent t
-test.

>>> Michael Schuler <Amanatius@web.de> 07/16/06 8:48 AM >>>
Dear List,

I want to compare the variances of two related samples, but i don't
know the statistical test to do this job. In other Words, I'm looking
for a Levene-Test for dependent samples. Could someone tell me the
solution? I couldn't find an answer in my statistic books.

Thanks all,

Michael

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