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Inequality measures for histograms

  • Benito V. Frosini

    (Istituto di Statistica - Università Cattolica del Sacro Cuore di Milano)

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    While inequality or concentration measures are defined with reference to the distribution of a non-negative character among n individuals, most practical applications are effected on frequency distributions over k classes, namely on histograms, when thinking of the corresponding graphical representation. Concerning this type of applications, this paper examines: (1) the goodness of approximation – to indices computed on individual data – of the same indices worked out on histograms; (2) the meaning and properties of inequality indices that are functions of the only frequencies and quantities pertaining to the k classes. These two kinds of investigations have been addressed to classical concentration measures proposed by Gini and Pietra-Ricci.

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    Article provided by Department of Statistics, University of Bologna in its journal STATISTICA.

    Volume (Year): 65 (2005)
    Issue (Month): 1 ()
    Pages: 27-40

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    Handle: RePEc:bot:rivsta:v:65:y:2005:i:1:p:27-40
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