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| From | Maarten Buis <maartenlbuis@gmail.com> |
| To | statalist@hsphsun2.harvard.edu |
| Subject | Re: st: xtmixed with nonrtolerance. What happens? |
| Date | Fri, 24 Jun 2011 12:30:53 +0200 |
--- On Fri, Jun 24, 2011 at 12:11 PM, "Lukas Bösch" wrote: > One more information: > > When i run the modell only with the complete export time series. Without any zeroes in the dependent data, the output looks like this: <snip> > sd(R.genus) | 2.93e-06 .0221629 0 I would not trust that result. First, leaving out 0s means you select on your dependent variable, which is a very bad idea. Second, your results indicate that the genus variation is de facto 0 (2.93e-6 = 0.000000293), which given your context is very unlikely. -- 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/