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Statistical theory and methodology. Mathematical statistics. Parametric inference. Nonparametric inference.enSun, 24 Sep 2017 22:53:55 GMTvBulletin60http://www.talkstats.com/images/misc/rss.pngStatistics Help @ Talk Stats Forum - Statistical Research
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A question on adjusted f effect size formula
http://www.talkstats.com/showthread.php/70184-A-question-on-adjusted-f-effect-size-formula?goto=newpost
Fri, 22 Sep 2017 08:31:56 GMTThe F adjusted formula as I am aware is:

sqrt[(a-1)/N * (F-1)]

where a is the number of conditions (a=3 for my case), N the total sample size (N=30 for my case for instance) and F the F-statistic value (F=0.495 for my case). Assuming that I have identified a minimum total sample size required for F=0.495 at a power of 0.8 (refer to attached image), what I unsure of, is that do you still input the original N of 30 into this formula when calculating the f adjusted value, or do you use the value of 42.5 (from the attached image)?