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From |
Maarten buis <maartenbuis@yahoo.co.uk> |

To |
statalist@hsphsun2.harvard.edu |

Subject |
Re: st: you estimated at least as many quantities as you have observations |

Date |
Fri, 5 Oct 2007 13:20:55 +0100 (BST) |

--- "Koksal, Bulent" <bkoksal@gmail.com> wrote: > What does the below note mean? Does it mean that the results are > unreliable. Thanks. > > Note: you estimated at least as many quantities as you have > observations. You estimated a model with exactly the same number of parameters as the number of observations. People who don't know statistics often fuss about how many observations they have, that is not really the problem (though often a reasonable approximation). The real problem is how many observations you have compared to the number of parameters you are estimating. If you are estimating a lot of parameters you need a lot of observations. In your case you either have a very large model or a very small data set, either way I would not put great value on your results. Hope this helps, Maarten ----------------------------------------- Maarten L. Buis Department of Social Research Methodology Vrije Universiteit Amsterdam Boelelaan 1081 1081 HV Amsterdam The Netherlands visiting address: Buitenveldertselaan 3 (Metropolitan), room Z434 +31 20 5986715 http://home.fsw.vu.nl/m.buis/ ----------------------------------------- ___________________________________________________________ Want ideas for reducing your carbon footprint? Visit Yahoo! For Good http://uk.promotions.yahoo.com/forgood/environment.html * * For searches and help try: * http://www.stata.com/support/faqs/res/findit.html * http://www.stata.com/support/statalist/faq * http://www.ats.ucla.edu/stat/stata/

**Follow-Ups**:**Re: st: you estimated at least as many quantities as you have observations***From:*Richard Williams <Richard.A.Williams.5@ND.edu>

**References**:**st: you estimated at least as many quantities as you have observations***From:*"Koksal, Bulent" <bkoksal@gmail.com>

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