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

["Nick Cox" <n.j.cox@durham.ac.uk>]

This is an FAQ. 

FAQ     . . Calculating variables containing weighted group summary
statistics
        . . . . . . . . . . . . . . . . . . . . .  N. J. Cox and S. P.
Jenkins
        1/03    I want to calculate a variable containing weighted
                group summary statistics, but I do not want to
                collapse the data and egen does not support weights.
                How can I do this?
                http://www.stata.com/support/faqs/data/weighted.html

Nick 
n.j.cox@durham.ac.uk 

Beatrice Crozza

I would like to construct a weighted mean of prices, taking as weight
the quantity for each price.

I am using the command egen(mean)

How can I instruct Stata to use quantities for each price as weight?

*
*   For searches and help try:
*   http://www.stata.com/help.cgi?search
*   http://www.stata.com/support/statalist/faq
*   http://www.ats.ucla.edu/stat/stata/