Notice: On April 23, 2014, Statalist moved from an email list to a forum, based at statalist.org.
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
st: AW: RE: AW: Exclude some observations from a sample in a regression
From
Claude Francoeur <[email protected]>
To
"[email protected]" <[email protected]>
Subject
st: AW: RE: AW: Exclude some observations from a sample in a regression
Date
Wed, 07 Apr 2010 08:58:55 -0400
Thanks for showing me these different methods. I should have mentioned
that I do have missing values in my sample. I'm confused though
concerning the right command to use.
regress price weight length if foreign returns a regression using 22
observations since there are no missing cases
regress price weight length rep78 if foreign returns a regression using
21 observations since there is one missing value under rep78. This seems
to be contrary to Nick's comment, but I probably am missing something.
regress price weight length rep78 if foreign==foreign returns a
regression using all 69 non missing observations including domestic
cases. The if command does not seem to be recognised.
Thanks for your help!
*
* For searches and help try:
* http://www.stata.com/help.cgi?search
* http://www.stata.com/support/statalist/faq
* http://www.ats.ucla.edu/stat/stata/