Calculate Gini Index of a numeric vector

Description

Calculate the Gini index of a numeric veector

Usage

1
gini(x, na.rm=FALSE)

Arguments

x

A numeric vector.

na.rm

Logical. If set to TRUE, NA values are omitted.

Details

The Gini index (Gini coefficient) is a measure of statistical dispersion. A Gini coefficient of zero expresses perfect equality where all values are the same. A Gini coefficient of one expresses maximal inequality among values.

Value

A numeric value between 0 and 1.

Author(s)

Jitao David Zhang

References

Gini. C. (1912) Variability and Mutability, C. Cuppini, Bologna 156 pages.

Examples

1
2
testValues <- runif(100)
gini(testValues)