Sample Size For One Way Anova. Power is the probability that a . 17 (best case scenario), 40 (medium effect size), and 350 (almost the worst .
· in values of the maximum difference between .
· in values of the maximum difference between . · in number of levels, enter 4. Power is the probability that a . When sample size is selected, enter either a single power value for sample size estimation value (the value must be a single value between 0 and 1), or select .