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st: re: Weighted mean of prices with quantities as weight


From   Kit Baum <baum@bc.edu>
To   statalist@hsphsun2.harvard.edu
Subject   st: re: Weighted mean of prices with quantities as weight
Date   Thu, 23 Oct 2008 06:46:03 -0400

< >
Bea said

I wrote:

egen newvar = wtmean(price), weight(quantity) if contract=="S", by(date)

but doesn't work.


You have the syntax wrong. If you -ssc desc _gwtmean- you will see that weight() is an option, so it must come after the comma.

. egen junk = wtmean(price) if foreign, weight(displacement) by(rep78)
(52 missing values generated)


Kit Baum, Boston College Economics and DIW Berlin
http://ideas.repec.org/e/pba1.html
An Introduction to Modern Econometrics Using Stata:
http://www.stata-press.com/books/imeus.html


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