Hello,
I am currently dealing with a xtprobit regression.
I
have experimented a problem with the coefficient of a dummy variable. IT
has not the sign that I expect, that is logical and obvious.
Maybe
there is a problem in my dataset, when I have put in the data, or is a
specific - and curious - characteristic of my sample, but maybe is a
"technical" problem.
Can you suggest me some commands or procedures to understand if the variable is bad-built or there are some technical problems?
Thanks
Luke
*
* For searches and help try:
* http://www.stata.com/help.cgi?search
* http://www.stata.com/support/faqs/resources/statalist-faq/
* http://www.ats.ucla.edu/stat/stata/