Proportion Overlap Calculations for Cohen's d — proportion

This function calculates the proportion overlap from two independent group d effect size calculations. Cohen's u1, u2, u3 and proportion overlap are provided.

Usage

proportion_overlap(
  model = NULL,
  x_col = NULL,
  y_col = NULL,
  df = NULL,
  d = NULL
)

Arguments

model: a saved independent t-test model
x_col: name of the column that contains the factor levels OR a numeric vector of group 1 scores
y_col: name of the column that contains the dependent score OR a numeric vector of group 2 scores
df: optional dataframe that includes the x_col and y_col
d: previously calculated d value

Value

A list of the following:

u1: Proportion of non-overlap across both distributions
u2: Proportion that one group is more than the same proportion in the other group
u3: Proportion of one group that is smaller than the median of the other group
p_o: Proportional overlap of distributions

Examples


proportion_overlap(d = .25)
#> $u1
#> [1] 0.1809524
#> 
#> $u2
#> [1] 0.5497382
#> 
#> $u3
#> [1] 0.5987063
#> 
#> $p_o
#> [1] 0.9005236
#>