Gregory (Greg) L. Snow Ph.D.
Statistical Data Center
Intermountain Healthcare
greg.snow at imail.org
801.408.8111
> -----Original Message-----
> From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-
> project.org] On Behalf Of Matev? Pavlic
> Sent: Saturday, April 30, 2011 11:28 AM
> To: r-help at r-project.org
> Subject: [R] QQ plot for normality testing
>
> Hi all,
>
>
>
> I am trying to test wheater the distribution of my samples is normal
> with QQ plot.
>
>
>
> I have a values of water content in clays in around few hundred
> samples. Is the code :
>
>
>
> qqnorm(w) #w being water content
>
> qqline(w)
>
>
>
>
>
> sufficient?
>
>
>
> How do I know when I get the plots which distribution is normal and
> which is not?
>
>
>
> Thanks, m
>
>
> [[alternative HTML version deleted]]
>
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