Not particularly R related, but r related.
For pearson correlation, the test statistics is based on t distribution.
ts = r * sqrt ((n-2)/(1-r^2))
with n-2 degree of freedom.
I think you can solve this question, maybe a little bit of googling.
On Jan 14, 2008 1:39 PM, Sanglamt <[EMAIL PROTECTE
I've spent several hours trying to track the answer down myself and failed
miserably so a simple question for everyone that will no doubt have a
painfully obvious answer.
What's the command to calculate the critical value of r using a two tailed
test with a given alpha and degrees of freedom? I.e
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