Contrasting the Gini and Zenga indices of economic inequality

Francesca Greselin (), Leo Pasquazzi () and Ričardas Zitikis

Journal of Applied Statistics, 2013, vol. 40, issue 2, 282-297

Abstract: The current financial turbulence in Europe inspires and perhaps requires researchers to rethink how to measure incomes, wealth, and other parameters of interest to policy-makers and others. The noticeable increase in disparities between less and more fortunate individuals suggests that measures based upon comparing the incomes of less fortunate with the mean of the entire population may not be adequate. The classical Gini and related indices of economic inequality, however, are based exactly on such comparisons. It is because of this reason that in this paper we explore and contrast the classical Gini index with a new Zenga index, the latter being based on comparisons of the means of less and more fortunate sub-populations, irrespectively of the threshold that might be used to delineate the two sub-populations. The empirical part of the paper is based on the 2001 wave of the European Community Household Panel data set provided by EuroStat. Even though sample sizes appear to be large, we supplement the estimated Gini and Zenga indices with measures of variability in the form of normal, t -bootstrap, and bootstrap bias-corrected and accelerated confidence intervals.

Date: 2013
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Citations: View citations in EconPapers (18)

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DOI: 10.1080/02664763.2012.740627

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