At 15:47 25/07/2011, Joshua Wiley wrote:
Hi Martin,
Off hand I do not know of a pre-defined function to do it, but the
"z-transformation" is just the inverse hyperbolic function, the mean
is just the mean, and the back transformation is the hypoerbolic
function so...
############
x <- c(.5, .4)
tanh(mean(atanh(x)))
############
should do it.
Assuming the correlations are based on the same sample size as I
would have thought one would otherwise have wanted to weight them.
Cheers,
Josh
On Mon, Jul 25, 2011 at 7:11 AM, Martin Batholdy
<batho...@googlemail.com> wrote:
> Hi,
>
>
> is there a function in R that computes the mean of two (or more)
correlations?
> (that is doing the z-transformation of the correlations,
computing the mean of the z-values and then retransform it to a correlation).
>
> Or is there a fisher-table implemented?
>
>
> I have not found anything via help.search() or google so far.
>
>
> thank you!
> ______________________________________________
> 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.
>
--
Joshua Wiley
Ph.D. Student, Health Psychology
University of California, Los Angeles
https://joshuawiley.com/
Michael Dewey
i...@aghmed.fsnet.co.uk
http://www.aghmed.fsnet.co.uk/home.html
______________________________________________
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.
