ChiES: Compute power for Chi Square Based on Effect Size Takes phi,...

In pwr2ppl: Power Analyses for Common Designs (Power to the People)

Compute power for Chi Square Based on Effect Size Takes phi, degrees of freedom, and a range of sample sizes. Alpha is .05 by default, alternative values may be entered by user

Description

Compute power for Chi Square Based on Effect Size Takes phi, degrees of freedom, and a range of sample sizes. Alpha is .05 by default, alternative values may be entered by user

Usage

ChiES(phi, df, nlow, nhigh, by = 1, alpha = 0.05)

Arguments

phi	phi coefficient (effect size for 2x2)
df	degrees of freedom
nlow	starting sample size
nhigh	ending sample size
by	Incremental increase in sample (e.g. nlow = 10, nhigh = 24, by = 2, produces estimates of 10, 12, and 14)
alpha	Type I error (default is .05)

Value

Power for Chi Square Based on Effect Size

Examples

ChiES(phi=.3,df=1,nlow=10,nhigh=200,by=10, alpha = .01)

pwr2ppl documentation built on Sept. 6, 2022, 5:06 p.m.