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From | Maarten buis <maartenbuis@yahoo.co.uk> |
To | statalist@hsphsun2.harvard.edu |
Subject | Re: st: Binary Variables |
Date | Wed, 2 Jun 2010 18:52:55 +0000 (GMT) |
--- On Wed, 2/6/10, Natalie Trapp wrote: > There are no missing data for the regions and I can most > certainly say that each farm in this dataset has a different > value for the fertiliser input because it's measured in > €. Well, one of your regions is Paris (ile de france), so I wouldn't be surprised if there aren't any farms there. At least it should be a weird region, which is not bad if it fell out of your analysis. > I also couldn't sort out how to make the "xtreg" command > work. It gives me the error "not sorted r(5);", even when I > sorted the data and then typed the "xtreg" command (maybe > because there are too many variables or maybe because I have > cross sectional data?!). The multilevel structure of your data is that farms are nested in regions. Hope this helps, Maarten -------------------------- Maarten L. Buis Institut fuer Soziologie Universitaet Tuebingen Wilhelmstrasse 36 72074 Tuebingen Germany http://www.maartenbuis.nl -------------------------- * * 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/