statsmodels.stats.oneway._power_equivalence_oneway_emp¶
- statsmodels.stats.oneway._power_equivalence_oneway_emp(f_stat, n_groups, nobs, eps, df, alpha=0.05)[source]¶
Empirical power of oneway equivalence test
This only returns post-hoc, empirical power.
Warning: eps is currently effect size margin as defined as in Wellek, and not the signal to noise ratio (Cohen’s f family).
- Parameters:
f_stat (float) – F-statistic from oneway anova, used to compute empirical effect size
n_groups (int) – Number of groups in oneway comparison.
nobs (ndarray) – Array of number of observations in groups.
eps (float) – Equivalence margin in terms of effect size given by Wellek’s psi.
df (tuple) – Degrees of freedom for F distribution.
alpha (float in (0, 1)) – Significance level for the hypothesis test.
- Returns:
pow – Ex-post, post-hoc or empirical power at f-statistic of the equivalence test.
- Return type:
