Table 1.

Power of the noncentral F-test.

DR	a = 0	a = 0.05	a = 0.1	a = 0.15	a = 0.2	a = 0.25	a = 0.35	a = 0.45
1.25	0.279	0.251	0.15	0.048	0.016	0.002	0	0
1.4	0.54	0.521	0.345	0.154	0.059	0.014	0	0
1.55	0.767	0.725	0.544	0.328	0.157	0.066	0.003	0
1.7	0.898	0.851	0.738	0.516	0.287	0.135	0.01	0
1.85	0.958	0.941	0.855	0.679	0.453	0.257	0.035	0.001

Notes: Group size is set as 4, variance is set as 0.12, and sample size is set as 6. Type I error rate is set as 0.05. a, group mean value (effect size).

Abbreviation: DR, difference ratio.