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| From | Ronan Conroy <rconroy@rcsi.ie> |
| To | "statalist@hsphsun2.harvard.edu" <statalist@hsphsun2.harvard.edu> |
| Subject | Re: st: Elimination of outliers |
| Date | Tue, 7 Jun 2011 10:32:00 +0100 |
Have a look at -mmregress-, SJ 9(3):439--453 On 2011 Meith 6, at 16:42, Jeff wrote: > "Outliers and influential observations should not routinely be deleted > or automatically down-weighted because they are not necessarily bad > observations. On the contrary, if they are correct, they may be the > most informative points in the data. For example, they may indicate > that the data did not come from a normal population or that the model is > not linear." "Regression Analysis By Example", 3rd Edition, Chatterjee, > Hadi, Price. Ronán Conroy rconroy@rcsi.ie Associate Professor Division of Population Health Sciences Royal College of Surgeons in Ireland Beaux Lane House Dublin 2 * * 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/