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Re: st: how to compare weight and unweighted statistics


From   Ulrich Kohler <ukohler@sowi.uni-mannheim.de>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: how to compare weight and unweighted statistics
Date   Mon, 23 Sep 2002 09:06:09 +0000

Yap Keng Loong  wrote
> i like to know what commands to use if i want to
> compare weight and unweighted statistics in the
> dataset.

It depends a bit on the number and nature of the statistics you want to 
compare. A general way may be to calculate weighted and unweighted statistics 
and store the results in a postfile. Use the following as a starting point 
and take a look at -help post- for more informations.


--------------------------------------------------
postfile stats weight uweight using myfile, replace  

foreach var of varlist myvars {
     summarize `var' [weight=wvar]    /* Or whatever statistic you like */
     local weight = r(mean)
     summarize `var'
     local uweight = r(mean)
     post stats (`weight') (`uweight')
}

postclose stats

use myfile, clear
gen diff = uweight - weight
list uweight weight diff
-----------------------------------------------------

regards 
uli




-- 
ukohler@sowi.uni-mannheim.de
http://www.sowi.uni-mannheim.de/lesas

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