[R] Grouped data

[Gabor Grothendieck]

Check out the meta and rmeta packages.

On Sun, Apr 27, 2008 at 8:45 PM, David Scott <d.scott at auckland.ac.nz> wrote:
>
> I have been given some data in summary form, as means and standard
> deviations for a number of studies. I want to combine some studies to
> obtain overall means and standard deviations and also to carry out
> t-tests.
>
> Obviously I can write code to do this but most likely someone has doone
> this already. Can anyone provide a pointer to such code?
>
> David Scott
>
>
> _________________________________________________________________
> David Scott     Department of Statistics, Tamaki Campus
>                The University of Auckland, PB 92019
>                Auckland 1142,    NEW ZEALAND
> Phone: +64 9 373 7599 ext 86830         Fax: +64 9 373 7000
> Email:  d.scott at auckland.ac.nz
>
> Graduate Officer, Department of Statistics
> Director of Consulting, Department of Statistics
>
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>