haplo.stats (version 1.7.6)

f.power: Power and sample size for the F distribution

Description

Power and sample size for the F distribution given non-centrality, degrees of freedom, alpha, N (for f.power), and power (for f.sample.size)

Usage

f.power(n, nc, df1, alpha)
f.power.dif(n, nc, df1, alpha, power)
f.sample.size(nc, df1, alpha, power, lower=20, upper=10000)

Arguments

n

sample size

nc

non-centrality parameter

df1

degrees of freedom for numerator of f distribution

alpha

type-I error

power

desired power (for sample size)

lower

lower limit for search space for sample size solution

upper

upper limit for search space for sample size solution

Value

• power, the difference in power from target power, and sample size, respectively for the three functions, assuming an F distribution for the test statistic