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Re: st: value weighted average


From   Maarten Buis <maartenlbuis@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: value weighted average
Date   Mon, 30 Jul 2012 09:39:43 +0200

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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