Hi,
 
I am trying to figure out how to get the correlation coefficient for a
QQ plot (residual plot).  So to be more precise, I am creating the plot
like this:
 
qq.plot(rstudent(regrname), main = rformula, col=1) 
 
But want to also access (or compute) the correlation coefficient for
that plot.
 
Thanks,  
 
Tom

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