A Review on Heterogeneity Test: Some Permutation Procedures
When dealing with categorical data, generally the notion of heterogeneity may be used instead of that of variability. There are many fields where data may be only represented by nominal categorical variables or by ordinal variables, e.g. opinion polls, performance qualitative assessments, psycho aptitude tests and so on. In this paper we provide a review of some nonparametric methods concerning testing for heterogeneity, based on permutation procedures. Examples of real applications in different frameworks are also shown.
KeywordsHeterogeneity tests Permutation test Nonparametric framework
The work was also partially supported by University of Ferrara, which funded the FIR (Research Incentive Fund) project “Advanced Statistical Methods for data analysis in complex problems”. The work was also partially supported by University of Padova BIRD185315/18.