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st: Producing averages for cross sectional data by ID
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
I would like to estimate the following production function for my 100
where i= ith farmer, Y = output, and X1i,X2i...'s= various inputs of the ith
Yibar=average output of ith farmer calculated over his multiple plots,
X1ibar=average of input1 of ith farmer calculated over his multiple plots
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?
Thank you in advance.
PS. Sorry for cross posting but I did not receive this message in my inbox
so perhaps nor did the rest of you.
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