The Gini coefficientmajority voting and social welfare
- Rodríguez Hernández, Juan Gabriel
- Salas del Mármol, Rafael
ISSN: 1578-0252
Año de publicación: 2013
Número: 11
Páginas: 7-18
Tipo: Artículo
Otras publicaciones en: Papeles de trabajo del Instituto de Estudios Fiscales. Serie economía
Resumen
Majority voting and social evaluation functions are the main alternatives proposed in the literature for aggregatingindividual preferences. Despite these being very different, this papershows that the ranking of income distributions, symmetric under the same transformation, by S-Gini consistent social evaluation functions and majority voting coincide if and only if the inequality index under consideration is the Gini coefficient. In this case, we show that the equally distributed equivalent income is equal to the median of the distribution. In addition, we find that the Gini coefficient is just an affine function of the median�mean ratio.