In this work, we propose to jointly analyse income and consumption distribution, using copula function to model the dependence structure, and the new formulation of Dagum distribution, proposed by Domma, Condino and Giordano (2018), to model the marginal distributions with a clear economic meaning of the marginal parameters. Indeed, this specification allow us to express the marginal distributions in terms of indicators of particular interest for the specific context and to evaluate the direct impact of some individual features on these indicators. Following the same criterion adopted for the marginals, we also reparameterize the copula function in terms of tail dependence measures, to have a tool for evaluating the direct impact of covariates on dependence. Preliminary results regarding data from Survey on Households Income and Wealth (SHIW) by bank of Italy are showed.
keywords
Poverty, Inequality, Median, Tail Dependence.
Authors biography
Dipartimento di Economia, Statistica e Finanza ‘‘Giovanni Anania’’ - Universita` della Calabria - Via P. Bucci, Cubo 0C - 87036 ARCAVACATA DI RENDE (CS) (e-mail: francesca.condino@unical.it; filippo.domma@unical.it).
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