mqr.inference.rate.
power_2sample#
- mqr.inference.rate.power_2sample(r1, r2, nobs, alpha, H0_value=None, meas1=1.0, meas2=1.0, alternative='two-sided', method='score', compare='diff')#
Calculate power of a test of difference or ratio of two rates of events.
- Null-hypothesis by compare
- ‘diff’r1 - r2 == H0_value‘ratio’r1 / r2 == H0_value
- Parameters:
- r1float
First rate.
- r2float
Second rate.
- nobsint
Number of observations.
- alphafloat
Required significance.
- betafloat
Required beta (1 - power).
- H0_valuefloat, optional
Null-hypothesis rate. Default 0 for ‘diff’, 1 for ‘ratio’.
- alternative{‘two-sided’, ‘less’, ‘greater’}
Sense of alternative hypothesis.
- methodstr, optional
Test method. See statsmodels documentation.
- compare{‘diff’, ‘ratio’}, optional
- ‘diff’Compares the difference between rates. Calls
sm..power_poisson_diff_2indep.‘ratio’Compares the ratio of two rates. Callssm..power_poisson_ratio_2indep.
- Returns: