Notice: On April 23, 2014, Statalist moved from an email list to a forum, based at statalist.org.
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
re: RE: st: areg Vs fe
From
Richard Williams <[email protected]>
To
[email protected], "[email protected]" <[email protected]>
Subject
re: RE: st: areg Vs fe
Date
Tue, 13 Mar 2012 09:18:53 -0500
At 07:58 AM 3/13/2012, Christopher Baum wrote:
<>
Richard wrote
I don't think it is a matter or running a test; it is a matter of
which is appropriate given the nature of your problem. The help for
areg says "areg is designed for datasets with many groups, but not a
number of groups that increases with the sample size."
Good advice indeed. Note that in
webuse grunfeld,clear
reg invest mvalue kstock i.company
xtreg invest mvalue kstock,fe
areg invest mvalue kstock, absorb(company)
The three sets of point and interval estimates are identical, as
they are estimating exactly the same model.
Aren't the standard errors supposed to be slightly different? Would
they be if there were a lot more companies?
-------------------------------------------
Richard Williams, Notre Dame Dept of Sociology
OFFICE: (574)631-6668, (574)631-6463
HOME: (574)289-5227
EMAIL: [email protected]
WWW: http://www.nd.edu/~rwilliam
*
* 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/