[R] effect size

[Edith Hodgen]

Hi

Has anyone out there written functions (or whatever) to calculate effect sizes (that's the easy bit - not too worried about that), and more particularly confidence intervals for effect sizes (estimated iteratively and involves non-central t - worth looking for someone else's wheel, before designing own)?

Thanks



Edith Hodgen
Statistician and Data Manager
New Zealand Council for Educational Research
Phone: +64-4-384 7939 x 812
Fax:      +64-4-384 7933
edith.hodgen at nzcer.org.nz

           Web site http://www.nzcer.org.nz

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