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In several studies the analysis of consumers’ perceptions has become of paramount strategic value in order to understand consumption behaviour. The aim of this paper is to determine the effectiveness of two alternative strategies for analyzing the “don’t know” responses in questionnaires with items having ordered response categories. Both strategies rest on a statistical model, denoted as cub (Combination...
The paper describes a mixture distribution generated by Beta Binomial and Uniform random variables to allow for a possible overdispersion in surveys when the response of interest is an ordinal variable. This approach considers the joint presence of feeling, uncertainty and a possible dispersion sometimes present in the evaluation contexts. After a discussion of the main properties...
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