Dear All,
I have to add to my recent request that the independent variables that I
want to add to the existing 54 independent variables are unit-invariant
(only time varying) macroeconomic variables. Only if they are unit-invariant
one of the time-dummies is omitted. It actually does not omit the time dummy
when I add a time-varying and unit-varying variable. My question is why is a
time dimension/time dummy omitted as one unit-invariant time-varying
variable is added?
Many thanks and best regards.
Nicolai
___________________________________
Nicolai Striewe
Research Assistant
Real Estate Management Institute
Aareal Professorship Real Estate Banking
Department of Finance, Accounting and Real Estate
European Business School (EBS)
Greater Frankfurt
GERMANY
-----Ursprüngliche Nachricht-----
Von: Nicolai C. Striewe [mailto:Striewe.ebs@rem-institute.org]
Gesendet: Mittwoch, 13. Mai 2009 14:55
An: 'gretl-users(a)lists.wfu.edu'
Betreff: Limited Number of Independent Variables - Random Effects - Panel
Data
Dear all.
May I pose the following problem with the random-effects panel data model
that I created:
The model consists of 54 independent variables (1 constant, 8 focus
variables, 5 control variables, and 40 time dummies). When I extend the
model by one focus variable it cuts off one time dummy. It seems to be a
restriction of gretl, that if more than 54 variables are specified in the
model, gretl leaves out all independent variables exceeding this limit
without a notification of omitting some variables.
Does gretl restrict the number of independent variables to 54? If yes, is
there a way around that restriction?
Many thanks in advance for your comments and thoughts.
Best regards,
Nicolai Striewe
___________________________________
Nicolai Striewe
Research Assistant
Real Estate Management Institute
Aareal Professorship Real Estate Banking
Department of Finance, Accounting and Real Estate
European Business School (EBS)
Greater Frankfurt
GERMANY
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