```========================================================================= Date: Mon, 24 Jul 2006 06:28:37 -0700 Reply-To: Albert-jan Roskam Sender: "SPSSX(r) Discussion" From: Albert-jan Roskam Subject: Re: weighted numbers Comments: To: "Beadle, ViAnn" In-Reply-To: Content-Type: text/plain; charset=iso-8859-1 Thank you for your quick reply! But if I add the NU function I can generate weighted (N) as well as UNweighted numbers of cases. Which is why I used N, not UN. aggregate outfile = "d:\temp\tmp.sav" / break = sex country3 educat / n = n / nu = nu. Albert-Jan --- "Beadle, ViAnn" wrote: > Weights don't apply to AGGREGATE; only to > statistical procedures. > > -----Original Message----- > From: SPSSX(r) Discussion > [mailto:SPSSX-L@LISTSERV.UGA.EDU] On Behalf Of > Albert-jan Roskam > Sent: Monday, July 24, 2006 7:52 AM > To: SPSSX-L@LISTSERV.UGA.EDU > Subject: weighted numbers > > Dear all, > > I want to calculate the relative proportions of > people > within educational categories, stratified by sex and > country. I use a standardized weight that corrects > for > sample selection bias. Could anybody tell me > why-oh-why the two methods listed below yield > (slightly) different results? The N function of the > aggregate counts the weighed number of cases within > the break group. So why are the AGGREGATE results > identical to the output I get using SUMMARIZE with > an > UNweighted sample? Am I missing something? > > Thanks a lot in advance! > > Albert-Jan > > > weight by w_plus. > > ** Method 1. > compute dummy = 1. > summarize tables = dummy by sex by country3 by > educat > / cells = npct (educat). > > ** Method 2. > aggregate outfile = "d:\temp\tmp.sav" / break = sex > country3 educat / n = n. > aggregate outfile = * / break = sex country3 / n_tot > = > n. > match files table = * / file = "d:\temp\tmp.sav" / > by > = sex country3. > compute pct = (n / n_tot ) * 100. > exe. > > __________________________________________________ > Do You Yahoo!? > Tired of spam? Yahoo! Mail has the best spam > protection around > http://mail.yahoo.com > __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around ```

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