Compute ridit scores (cumulative midpoint ranks) for inequality measures

Ridit scores are used as the socioeconomic rank variable in concentration index calculations. For group \(i\), the ridit is the cumulative population share up to the midpoint of group \(i\).

Usage

compute_ridit_scores(pop_shares)

Arguments

pop_shares

Numeric vector of population proportions (ordered from most to least deprived, sums to 1).

Value

Numeric vector of ridit scores in [0, 1].

Examples

compute_ridit_scores(rep(0.2, 5))
#> [1] 0.1 0.3 0.5 0.7 0.9