I fell to use traditional hetero and autocorrelation tests in an unbalanced
panel data (not enough observations) and I am not very clear on how to
proceed in a different satisfactory manner.
My second question is: I tried this procedure "
. xtreg depvar indepvar, re
. rvfplot, yline(0) "
and received the following message: last estimates not found, r(301). But
the procedure works if not panel data. How to solve it or what can I do
with panel data?
I would be very grateful if you could please help me.
Many thanks in advance.
