From: "Nick Cox" <[email protected]>
Reply-To: [email protected]
To: <[email protected]>
Subject: st: RE: Producing averages for cross sectional data by ID
Date: Fri, 21 Apr 2006 18:56:55 +0100
Sorting by farmer ID is not necessary. You can
get the averages with a suitable -egen, mean()-
and -by()- or -by:-.
Nick
[email protected]
Gauri Khanna
> I would like to produces averages in my cross sectional data and was
> wondering how to do it.
>
> I have cross sectional data on 300 plots for 100 farmers.
> Each plot is
> associated with a farmer's identification. Hence the same
> farmer can have
> multiple plots.
>
> I would like to estimate the following production function for my 100
> farmers:
>
> (Yi-Yibar)=(X1i-X1ibar)+(X2i-X2ibar)+(X3i-X3ibar)+....
>
> where i= ith farmer, Y = output, and X1i,X2i...'s= various
> inputs of the ith
> farmer,
>
> Yibar=average output of ith farmer calculated over his multiple plots,
> X1ibar=average of input1 of ith farmer calculated over his
> multiple plots
> etc.
>
> How can I select the ith farmer from my data and calculate
> averages? Note
> that each farmer has a farmerID
>
> I know that I must sort the data by "farmerID" but what comes after?
*
* For searches and help try:
* http://www.stata.com/support/faqs/res/findit.html
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/
_________________________________________________________________
