Estimate Cohen's d for effect size

Question

given two vectors:

x <- rnorm(10, 10, 1)
y <- rnorm(10, 5, 5)

How to calculate Cohen\'s d for effect size?

For example, I want to

Answer 1

There are several packages providing a function for computing Cohen's d. You can for example use the cohensD function form the lsr package :

library(lsr)
set.seed(45)
x <- rnorm(10, 10, 1)
y <- rnorm(10, 5, 5)
cohensD(x,y)
# [1] 0.5199662