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Re: st: egen(more) panel data MA by group/year


From   Steven Archambault <archstevej@gmail.com>
To   n.j.cox@durham.ac.uk, statalist@hsphsun2.harvard.edu
Subject   Re: st: egen(more) panel data MA by group/year
Date   Mon, 17 Aug 2009 13:31:04 -0600

Sorry, figured it out . This is the correct format.

 egen inc_avg = ma(income), by(ethnicity year)








On Mon, Aug 17, 2009 at 1:27 PM, Steven Archambault<archstevej@gmail.com> wrote:
> Hi all,
>
> I am trying to get a moving average for a group of observations, per
> year, in my panel data. The data observations are individuals, each
> with an ethnicity. I want to get the yearly average income of those
> individuals by ethnicity.
>
> Essentially, I am trying to do this:
>
> egen inc_avg = ma(income), by(ethnicity)
>
> Stata does not seem to allow -by- for -ma-
>
> I also tried
>
> egen inc_avg = ma(income), by(ethnicity) & (year)
>
> Stata doesn't allow & in this context.
>
> Any suggestions?
>
> Thanks,
> Steve
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