Hi R-helpers,
I have two questions I hope you could help me with them:
In the plm package how can I calculate the R2 within, R2 between and R2
overall? Is there any special reason to not display these values?
When using first differences do I need to have some special care with
dummies (both year dummies and industry dummies)?
(A friend who works with Stata told me that there is necessary to construct
some «accumulated dummies».)
Thank you very much,
Cecília Carmo
(Universidade de Aveiro Portugal)
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