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st: xtmixed and no of obs per group
From
saurav pathak <[email protected]>
To
[email protected]
Subject
st: xtmixed and no of obs per group
Date
Tue, 23 Feb 2010 15:12:56 +0000
Dear All
I am using a data set with 40K observations. I have 14 Independent Variables
(IV) in the xtmixed command. The observations are grouped into a group
variable, the number of groups are 5000. When I use *estat group *I see
that the average number of observations per group is 8.
My question now is whether the average number of obs = 8 which is less than
the total number of IV which is 14 will have a bad effect (indeterminacy)
on the estimates of xtmixed, or, is it acceptable to have such a situation
where the avg no of obs per group could be less than the number of IVs
Kindly help me with is
Thanks
Saurav
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