Hi! Well, if you look at the output: shapiro.test(rnorm(5000)) > >Â Â Â Â Shapiro-Wilk normality test > > data:Â rnorm(5000) > W = 0.9997, p-value = 0.6205
You can see that the p-value is 0.6205 so you can't refuse the normality hypotesis. H0: normal data   vs H1: not normal So shapiro.wilk test is saying that your data are normal and it's correct! Bye Marta ----- Messaggio originale ----- Da: C.H. <[EMAIL PROTECTED]> A: "Bunny, lautloscrew.com" <[EMAIL PROTECTED]> Cc: r-help@r-project.org Inviato: Domenica 13 luglio 2008, 7:27:43 Oggetto: Re: [R] shapiro wilk normality test You may consider the nortest package. http://cran.r-project.org/web/packages/nortest/index.html Regards, CH On Sat, Jul 12, 2008 at 11:30 PM, Bunny, lautloscrew.com <[EMAIL PROTECTED]> wrote: > Hi everybody, > > somehow i dont get the shapiro wilk test for normality. i just can´t find > what the H0 is . > > i tried : > > shapiro.test(rnorm(5000)) > >    Shapiro-Wilk normality test > > data: rnorm(5000) > W = 0.9997, p-value = 0.6205 > > > If normality is the H0, the test says it´s probably not normal, doesn´t it ? > > 5000 is the biggest n allowed by the test... > > are there any other test ? ( i know qqnorm already ;) > > thanks in advance > > matthias > ______________________________________________ > 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. > -- CH Chan Research Assistant - KWH http://www.macgrass.com ______________________________________________ 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. Vuoi incontrare Rihanna? [[elided Yahoo spam]] [[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.