Statalist


[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

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


From   "Beatrice Crozza" <beatrice.crozza@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Weighted mean of prices with quantities as weight
Date   Thu, 23 Oct 2008 10:28:43 +0100

Dear Jared,

tahnk you very much for you suggestion.

I have installed the package, however I need to calculate my weighted
mean for each day and    only for some tipe of contract.

I wrote:

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

but doesn't work.

Any suggestion?

Thank you very much.

Best,
Bea

2008/10/23 Jared Delisle <rjd1867@fsu.edu>:
> I finally get to chime in!  Fairly new to the list (about a week), so here
> goes...
>
> -findit _gwtmean-
>
> Install this package, and you will have a new command, -wtmean-, that works
> as follows:
>
> - egen newvar = wtmean(price), weight(quantity) -
>
> Thanks to David Kantor for this code.
>
> Take care,
> Jared
>
> Beatrice Crozza wrote:
>>
>> Dear all,
>>
>> 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?
>>
>> Thank you very much.
>>
>> Best,
>> Bea
>> *
>> *   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/
>>
>
> *
> *   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/
>
*
*   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/



© Copyright 1996–2014 StataCorp LP   |   Terms of use   |   Privacy   |   Contact us   |   What's new   |   Site index