Hello Sven,
thank you very much for your answer.
I see this. But I still don't know - taking this example - how I can control for
individual fixed effects for Joe, Sue, Mark with Gretl?
Liliya
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<gretl-users-request(a)lists.wfu.edu> schrieb am 18:01 Dienstag, 26.Mai 2015:
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1. Re: Gretl-users Digest, Vol 100, Issue 20 (Sven Schreiber)
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Message: 1
Date: Tue, 26 May 2015 01:53:54 +0200
From: Sven Schreiber <svetosch(a)gmx.net>
To: gretl-users(a)lists.wfu.edu
Subject: Re: [Gretl-users] Gretl-users Digest, Vol 100, Issue 20
Message-ID: <5563B612.3000602(a)gmx.net>
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Am 25.05.2015 um 21:13 schrieb Liliya Netskar:
Actually I used a very simple data set for the purporse of learning.
The
Gretl output file and the data set are attached below. Sorry, I have a
german version :). Thanks again for your help!
Your output (parts):
Modell 1: Fixed-effects, mit 12 Beobachtungen
Mit 4 Querschnittseinheiten
Zeitreihenl????nge = 3
Abh????ngige Variable: TestGrade
Weggelassen wg. exakter Kollinearit????t: Joe Sue Mark
So if I interpret your setup correctly, you told gretl to include unit
fixed effects (hence gretl's description as "Fixed-effects"), and then
you manually created and included unit dummies "Joe", "Sue", and
"Mark".
So effectively you're throwing in two sets of identical (or collinear)
unit dummies. Of course they're collinear then and gretl throws them out
because of that.
(The fact that the calculation is done with the within transformation
doesn't matter for this problem.)
hth,
sven
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