d.computation: Compute Cohen's d

In selection: Correcting Biased Estimates Under Selection

Description

Compute Cohen's d

Usage

d.computation(y, group, short = TRUE, target.group = NULL)

Arguments

y	The y variable (quantitative) on which group differences are to be assessed.
group	The grouping variable
short	Logical. If true, it will only output the value of d. Otherwise, it also outputs the mean differences, the pooled variance, and the pair of means.
target.group	The group to reference.

Details

Cohen's d is used to assess average group differences, regardless of sample size. It is consequently a measure of effect size.

Value

If short=FALSE, the mean differences, the pooled variance, and the pair of means. Otherwise, just the d.

Author(s)

Dustin Fife

Examples

data(iris)
d.computation(iris$Petal.Width, iris$Species, short=FALSE)

selection documentation built on May 30, 2017, 5:27 a.m.