mqr.inference.variance.
size_2sample#
- mqr.inference.variance.size_2sample(var_ratio, alpha, beta, alternative='two-sided', method='f')#
Calculate sample size for test of ratio of variances.
- Null-hypothesis
var_ratio = var_1 / var_2 == 1
- Parameters:
- var_ratiofloat
Required effect size.
- alphafloat
Required significance.
- betafloat
Required beta (1 - power).
- alternative{‘two-sided’, ‘less’, ‘greater’}, optional
Sense of alternative hypothesis.
- method{‘f’}, optional
Numerically solves
power_2sample(passing method) equal to 1 - ‘beta’ by changing n. Only ‘f’ is available.
- Returns: