Terrain effect sizes — terrain_effect_size • blueterra

Computes standardized differences between two groups for numeric terrain variables.

Usage

terrain_effect_size(data, group, vars = NULL, method = "cohens_d", ...)

Arguments

data: A data frame.
group: Character name of the grouping column.
vars: Optional character vector of numeric variables.
method: Effect-size method. Currently "cohens_d".
...: Reserved for future methods.

Value

A tibble with one row per variable.

Details

Cohen's d is computed as the difference in group means divided by pooled standard deviation. Exactly two non-missing groups are required.

See also

terrain_pca()

Examples

df <- data.frame(group = rep(c("a", "b"), each = 5), slope = 1:10)
terrain_effect_size(df, group = "group", vars = "slope")
#> # A tibble: 1 × 7
#>   variable group_1 group_2 mean_1 mean_2 effect_size method  
#>   <chr>    <chr>   <chr>    <dbl>  <dbl>       <dbl> <chr>   
#> 1 slope    a       b            3      8       -3.16 cohens_d