Hi Ashok, You can try : *shapiro.test(**my.lm$resid**)* But I remember reading that "good" tests for the normality assumptions (specifically that of the residuals), do not exist as we would have hoped them to.
Good luck, Tal ----------------Contact Details:------------------------------------------------------- Contact me: tal.gal...@gmail.com | 972-52-7275845 Read me: www.talgalili.com (Hebrew) | www.biostatistics.co.il (Hebrew) | www.r-statistics.com/ (English) ---------------------------------------------------------------------------------------------- 2009/11/23 Uwe Ligges <lig...@statistik.tu-dortmund.de> > > > ashok varma wrote: > >> Hello, >> >> I am fitting a Linear model using R. Now, i want to know how to test >> whether >> my model is following the homoscadasticity and residuals being >> random assumptions or not while fitting the model. >> > > > See ?lm. For accessing residuals, see ?residuals. Or use plot() on a lm > object to see diagnostic plots. > > Uwe Ligges > > > > > thanks a lot in advance, >> >> Ashok Varma >> >> [[alternative HTML version deleted]] >> >> ______________________________________________ >> R-help@r-project.org mailing list >> https://stat.ethz.ch/mailman/listinfo/r-help >> PLEASE do read the posting guide >> http://www.R-project.org/posting-guide.html >> and provide commented, minimal, self-contained, reproducible code. >> > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide > http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > [[alternative HTML version deleted]] ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
