Modelling Uncertainty and Overdispersion in Ordinal Data |
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Authors: | Maria Iannario |
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Affiliation: | 1. Department of Political Sciences , University of Naples Federico II , Naples , Italy maria.iannario@unina.it |
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Abstract: | In this article we introduce a probability distribution generated by a mixture of discrete random variables to capture uncertainty, feeling, and overdispersion, possibly present in ordinal data surveys. The choice of the components of the new model is motivated by a study on the data generating process. Inferential issues concerning the maximum likelihood estimates and the validation steps are presented; then, some empirical analyses are given to support the usefulness of the approach. Discussion on further extensions of the model ends the article. |
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Keywords: | Beta-binomial distribution smallcaps smallerCapital" >CUBE models Ordinal data |
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