Gini: Computation of the Gini Coefficient for the GB2 Distribution and its Particular Cases.
Description
Computes the Gini coefficient for the GB2 distribution using the function gb2.gini.
Computes the Gini coeficient for the Beta Distribution of the Second Kind, Dagum and Singh-Maddala distributions.Usage
gini.gb2(shape1, shape2, shape3)
gini.b2(shape2, shape3)
gini.dag(shape1, shape2)
gini.sm(shape1, shape3)
Arguments
shape1
positive parameter.
shape2, shape3
positive parameters of the Beta distribution.
References
Kleiber, C. and Kotz, S. (2003)
Statistical Size Distributions in Economics and Actuarial Sciences, chapter 6.
Wiley, Ney York.
McDonald, J. B. (1984)
Some generalized functions for the size distribution of income.
Econometrica, 52, 647--663.