gmd() computes Gini's mean difference for a numeric vector
or for all numeric vectors in a data frame.
A vector or data frame.
Optional, unquoted names of variables that should be selected for
further processing. Required, if
For numeric vectors, Gini's mean difference. For non-numeric vectors
or vectors of length < 2, returns
Gini's mean difference is defined as the mean absolute difference between
any two distinct elements of a vector. Missing values from
David HA. Gini's mean difference rediscovered. Biometrika 1968(55): 573-575
data(efc) gmd(efc$e17age) #>  9.297005 gmd(efc, e17age, c160age, c12hour) #> # A tibble: 1 x 3 #> e17age c160age c12hour #> <dbl> <dbl> <dbl> #> 1 9.30 15.2 47.9