Events and Meetings of Italian Statistical Society, Statistics and Demography: the Legacy of Corrado Gini

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A review on heterogeneity test: some permutation procedures
Stefano Bonnini, Eleonora Carrozzo, Luigi Salmaso

Last modified: 2015-09-05


When dealing with categorical data, generally the notion ofheterogeneity may be used instead of that of variability. There are many fieldswhere data may be only represented by nominal categorical variables or byordinal variables, e.g. opinion polls, performance qualitative assessments,psycho aptitude tests and so on. In this paper we provide a review of somenonparametric methods concerning testing for heterogeneity, based onpermutation procedures. Examples of real applications in different frameworks arealso shown.

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