# ============================================================
# Effect Size: Cohen's d & Hedges' g
# Biostatistics in R — Rverse Analytics
# https://rverseanalytics.com/learn-biostatistics/effect
# ============================================================

# Effect size: Cohen's d & Hedges' g
library(effectsize)
# How big is the mpg gap between gearboxes?
cohens_d(mpg ~ am, data = mtcars)
# Hedges' g - bias-corrected for small samples
hedges_g(mpg ~ am, data = mtcars)
# Interpret the magnitude
interpret_cohens_d(1.48)