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AW: st: Industry dummies - inflated standard errors
From
"Seliger Florian" <[email protected]>
To
"'[email protected]'" <[email protected]>
Subject
AW: st: Industry dummies - inflated standard errors
Date
Mon, 9 Jul 2012 15:00:15 +0000
It seems that I chose an unfortunate reference category.
Thanks.
-----Ursprüngliche Nachricht-----
Von: [email protected] [mailto:[email protected]] Im Auftrag von Maarten Buis
Gesendet: Montag, 9. Juli 2012 16:47
An: [email protected]
Betreff: Re: st: Industry dummies - inflated standard errors
On Mon, Jul 9, 2012 at 4:38 PM, Seliger Florian wrote:
> Using factor variables solves the problem.
> However, I don't understand why? What is the difference between using dummy_1-dummy_33 and i.dummy?
It could mean that you did not exclude the reference category from dummy_1-dummy_33, or that you chose an unfortunate reference category, or that you made an error while creating those indicator variables.
Hope this helps,
Maarten
--------------------------
Maarten L. Buis
Institut fuer Soziologie
Universitaet Tuebingen
Wilhelmstrasse 36
72074 Tuebingen
Germany
http://www.maartenbuis.nl
--------------------------
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