
please do some reading - I *think* the main difference is that the x and y
axes are reversed, but I really don't know what SAS prints out

there are a many 'defaults' that are rather arbitrary - sometimes SAS uses
1, while R uses another

??qqnorm brings up a list of functions, including stats::qqnorm
?stats::qqnorm brings up the help page for the function

On Mon, Jan 25, 2010 at 12:41 PM, eeramalho [via R] <
ml-node+1289588-934349779@n4.nabble.com<ml-node%2B1289588-934349779@n4.nabble.com>
> wrote:

> Thank you David. I got it now.
>
> Maybe you can help again.
>
> I am typing the following code to draw a QQ plot but the line does not look
> right?
>
> *******************
> qqnorm(cbiomass)
>
> qqline(cbiomass)
> ***********************
> the graph looks very different from the graph generated by SAS.
>
> Thank you again.
>
> Emiliano.
>
> ------------------------------
> Date: Fri, 22 Jan 2010 21:32:26 -0800
> From: [hidden email]<http://n4.nabble.com/user/SendEmail.jtp?type=node&node=1289588&i=0>
> To: [hidden email]<http://n4.nabble.com/user/SendEmail.jtp?type=node&node=1289588&i=1>
> Subject: Re: Quartiles and Inter-Quartile Range
>
> It's looks like you think that type=2 are the 'true' quantiles, but the
> default method in R is type=7
>
> You might want to look at ?stats::quantile
>
> hth
> david freedman
>
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-- 
Natalia and/or David

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