statsmodels.stats.power.FTestAnovaPower.power¶
-
FTestAnovaPower.
power
(effect_size, nobs, alpha, k_groups=2)[source]¶ Calculate the power of a F-test for one factor ANOVA.
- Parameters
- effect_size
float
standardized effect size, mean divided by the standard deviation. effect size has to be positive.
- nobs
int
orfloat
sample size, number of observations.
- alpha
float
in
interval
(0,1) significance level, e.g. 0.05, is the probability of a type I error, that is wrong rejections if the Null Hypothesis is true.
- k_groups
int
orfloat
number of groups in the ANOVA or k-sample comparison. Default is 2.
- effect_size
- Returns
- power
float
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.
- power