- FTestAnovaPower.power(effect_size, nobs, alpha, k_groups=2)¶
Calculate the power of a F-test for one factor ANOVA.
standardized effect size, mean divided by the standard deviation. effect size has to be positive.
sample size, number of observations.
significance level, e.g. 0.05, is the probability of a type I error, that is wrong rejections if the Null Hypothesis is true.
number of groups in the ANOVA or k-sample comparison. Default is 2.
Power of the test, e.g. 0.8, is one minus the probability of a type II error. Power is the probability that the test correctly rejects the Null Hypothesis if the Alternative Hypothesis is true.