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RE: st: value weighted average


From   tashi lama <ltashi32@hotmail.com>
To   <statalist@hsphsun2.harvard.edu>
Subject   RE: st: value weighted average
Date   Mon, 30 Jul 2012 14:51:49 +0000

bys group:sum x[aw=y] would give the same mean. Is one of them(analytic or importance weights) better than the others in this kind of problem?

----------------------------------------
> Date: Mon, 30 Jul 2012 09:39:43 +0200
> Subject: Re: st: value weighted average
> From: maartenlbuis@gmail.com
> To: statalist@hsphsun2.harvard.edu
>
> On Sun, Jul 29, 2012 at 11:43 AM, Braunfels, Philipp wrote:
>> can anyone help me in calculating value weighted averages of variable X where the weights is defined by variable Y?
>
> *------------ begin example -------------
> clear
> input ///
> ID y x time group
> 1 50 1 1990 1
> 2 60 2 1990 1
> 3 70 3 1990 1
> 6 10 4 1990 2
> end
>
> bys group: sum x [iw=y]
> *------------- end example --------------
> (For more on examples I sent to the Statalist see:
> http://www.maartenbuis.nl/example_faq )
>
> Hope this helps,
> Maarten
>
> --------------------------
> Maarten L. Buis
> Institut fuer Soziologie
> Universitaet Tuebingen
> Wilhelmstrasse 36
> 72074 Tuebingen
> Germany
>
>
> http://www.maartenbuis.nl
> --------------------------
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