Date:         Fri, 5 Oct 2007 16:29:58 -0400
Reply-To:     Björn Türoque <donald.asay82@gmail.com>
Sender:       "SPSSX(r) Discussion" <SPSSX-L@LISTSERV.UGA.EDU>
From:         Björn Türoque <donald.asay82@gmail.com>
Subject:      Re: Chi-Square in Crosstabs
Comments: To: G.Oliver@econ.usyd.edu.au
In-Reply-To:  <004201c806f5$3b4e4ac0$b1eae040$@com>
Content-Type: text/plain; charset=ISO-8859-1

Gary,

Are you trying to match up cases pre test and post test? As an example, are
you looking at the same person's results from the first survey and comparing
these to the results to the second survey? Your problem may be the way your
data is stored, is the data set up so that you have each person as a case,
and each case has the results from the pre and post test stored?

Knowing how your data is stored is very important to the types of analysis
you can run.




On 10/4/07, ViAnn Beadle <vab88011@gmail.com> wrote:
>
> I'm not sure what you mean by the option "does not allow me to run the
> computation". You should have two sub-tables, one for each group and a
> chi-square value for each before and after table. What hypothesis are you
> testing? IMHO, you have a within-subjects design here for which a
> chi-square
> test does not seem to be suitable (note that I am not a statistician and
> don't even pretend to be one on TV).
>
> -----Original Message-----
> From: SPSSX(r) Discussion [mailto:SPSSX-L@LISTSERV.UGA.EDU] On Behalf Of
> Gary Oliver
> Sent: Thursday, October 04, 2007 5:13 PM
> To: SPSSX-L@LISTSERV.UGA.EDU
> Subject: Chi-Square in Crosstabs
>
> Hi All
>
> I have 3 survey questions each with a before and after answer from two
> groups (N=393, N=540). I have put this in an SPSS data file. There are
> seven variables corresponding to the three before and three after survey
> questions plus one variable as a group coding dummy variable to identify
> the two groups.
>
> The crosstabs option does not allow me to run the computation.
>
> I have looked in help and my SPSS books (eg Pallant) but the examples
> they give a unlike mine. Suggestions appreciated
>
> Warm regards/gary
>



-- 
Björn Türoque
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