f.contr.d: Compute contrast f from d

In mcfanda/cpower: Power analysis for contrasts

Description

Compute contrast f from d

Usage

f.contr.d(cont, d, scale = "g")

Arguments

cont	vector of contrast weights.
d	d coefficient for given contrast.
scale	method to scale d.

Details

The parameter scale controls the method used to scale the effect size d.

1. scale="g" assumes scaling by dividing 2*d by the sum of absolute coefficients

2. scale="z" assumes scaling by dividing d by the square-root of the sum of squares of the coefficients

3. numeric any constant that multiplies the unscaled d to obtain the scaled d

Value

f.

Author(s)

Marcello Gallucci, [e-mail]

mcfanda/cpower documentation built on May 28, 2019, 1 p.m.