mqr.inference.stddev.
size_2sample#
- mqr.inference.stddev.size_2sample(std_ratio, alpha, beta, alternative='two-sided')#
Calculate sample size for test of ratio of standard deviations.
- Null-hypothesis
std_ratio = sigma_1 / sigma_2 == 1
- Parameters:
- std_ratiofloat
Required effect size.
- alphafloat
Required significance.
- betafloat
Required beta (1 - power).
- alternative{‘two-sided’, ‘less’, ‘greater’}, optional
Sense of alternative hypothesis.
- Returns: