Cohen's d (pooled-SD standardised mean difference)

Cohen's d (pooled-SD standardised mean difference)

Usage

cohens_d(x, y)

Arguments

x, y

Numeric vectors.

Value

The standardised mean difference; 0 when either sample is too small or both share one constant, NA when the pooled SD is zero but the means differ (the standardised difference is then unbounded, not zero).

Examples

cohens_d(c(5, 6, 7, 8), c(5, 6, 7, 9))
#> [1] -0.1651446