Date:         Wed, 15 Jan 1997 09:24:35 -0600
Reply-To:     "Scheltema, Karen" <Karen.Scheltema@STATE.MN.US>
Sender:       "SPSSX(r) Discussion" <SPSSX-L@UGA.CC.UGA.EDU>
From:         "Scheltema, Karen" <Karen.Scheltema@STATE.MN.US>
Subject:      Re: Difference of proportions, etc.

it should also be noted that the square of the z-test for independent
proportions is the same as the chi-square test of independence.
 
Karen Scheltema, MA MS
Statistician
State of Minnesota
Department of Human Services
Division of Performance Measurement and Quality Improvement
444 Lafayette Road
St. Paul, MN 55155-3823
(612) 296-4339         fax (612)297-1862
karen.scheltema@state.mn.us
 
 ----------
From: David Nichols
To: "SPSSX(r) Discussion"
Subject: Re: Difference of proportions, etc.
Date: Tuesday, January 14, 1997 5:03PM
 
In article <32D6E6DB.1BE2@spss.com>, David Marso  <marso@spss.com> wrote:
>Ruth,
>  The following will probably work.
>(I don't know how your stuff is coded or I would probably remove
>the word probably from the above sentence).
>
>COMPUTE Groupvar = MAX(Male_Var,Female_var).
>Then run the T-Test using Groupvar as the grouping variable.
>
>This can be done in syntax or the dialog boxes under
>Data>Transform>Compute...
>Regards, David Marso
>
>Ruth Ann Stacy wrote:
>>
>> These are elementary questions but I am new to
>> SPSS.  First, what test do I use to do a difference
>> of proportions test:Independent Binomial
>> Experiments.
>> Second, I am working with a survey in which females
>> answered quesA and males answered quesB. (They are
>> the same question.  Hey, I would have designed the
>> survey differently.  Anyway, I want to do an
>> independent sample t-test of difference of means
>> but using the windows version, it wants a grouping
>> variable.  The two variables, quesA and quesB
>> already form the grouping.  Any suggestions?
>> Thanks in advance.
 
If for the test of independent proportions you want the popular
Z-test, this isn't programmed into any SPSS procedure at the
current time. However, there is a macro available that will do
it. It's available at
 
ftp://ftp.spss.com/pub/spss/statistics/nichols/macros
 
as ztest.sps, with ztest.rm as the readme file. You can get to
it via our Web site by clicking on Tech Support, then Macros
under Ftp Archives, and scrolling to the end of the macro section.
 
 --
 
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David Nichols             Senior Support Statistician              SPSS,
Inc.
Phone: (312) 329-3684     Internet:  nichols@spss.com     Fax: (312)
329-3668
 
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