On Fri, Nov 9, 2012 at 10:08 AM, Pham Ngoc Minh wrote:
> I got the solution after reading Gould's instructions . I meant to
> create categorical but not indicator variables, actually.
There is no difference: they are equally bad.
-- Maarten
---------------------------------
Maarten L. Buis
WZB
Reichpietschufer 50
10785 Berlin
Germany
http://www.maartenbuis.nl
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