since t = (M(1) - M(2)) / S*sqrt(1/n(1) + 1/n(2))
and d = (M(1) - M(2)) / S,
Doesn't that make d / sqrt(1/n(1) + 1/n(2)) = t ?
At 05:51 PM 4/19/00 -0400, you wrote:
>is there a standard error ... for an effect size?
>
>as an example ... say you were looking at differences between means between
>control and treatment ... and, the effect size came out to be ... for sake
>of argument ... .3 ... in favor of the treatment
>
>is there (in this case) some standard error ... that could be used to judge
>this value in terms of sampling error? and if so, how would one go about
>calculating it?
>
>
>
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------------------------------------
Paul R. Swank, PhD.
Professor & Advanced Quantitative Methodologist
UT-Houston School of Nursing
Center for Nursing Research
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