pwr.f2.test: Power calculations for the general linear model
Description
Compute power of test or determine parameters to obtain target
power (same as power.anova.test).
Usage
pwr.f2.test(u = NULL, v = NULL, f2 = NULL, sig.level = 0.05, power = NULL)
Arguments
u
degrees of freedom for numerator
v
degrees of freedomfor denominator
f2
effect size
sig.level
Significance level (Type I error probability)
power
Power of test (1 minus Type II error probability)
Value
Object of class '"power.htest"', a list of the arguments
(including the computed one) augmented with 'method' and 'note'
elements.
Details
Exactly one of the parameters 'u','v','f2','power' and
'sig.level' must be passed as NULL, and that parameter is
determined from the others. Notice that the last one has non-NULL
default so NULL must be explicitly passed if you want to compute
it.
References
Cohen, J. (1988). Statistical power analysis for the
behavioral sciences (2nd ed.). Hillsdale,NJ: Lawrence Erlbaum.