Modelling scale effects in rating data: a Bayesian approach

Maria Iannario (), Maria Kateri and Claudia Tarantola
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Maria Iannario: University of Naples Federico II
Maria Kateri: RWTH Aachen University
Claudia Tarantola: University of Pavia

Quality & Quantity: International Journal of Methodology, 2024, vol. 58, issue 5, No 2, 4053-4071

Abstract: Abstract We present a Bayesian approach for the analysis of rating data when a scaling component is taken into account, thus incorporating a specific form of heteroskedasticity. Model-based probability effect measures for comparing distributions of several groups, adjusted for explanatory variables affecting both location and scale components, are proposed. Markov Chain Monte Carlo techniques are implemented to obtain parameter estimates of the fitted model and the associated effect measures. An analysis on students’ evaluation of a university curriculum counselling service is carried out to assess the performance of the method and demonstrate its valuable support for the decision-making process.

Keywords: Bayesian ordinal superiority measures; Heterogeneity of variances; MCMC; Ordinal responses; Scale effects (search for similar items in EconPapers)
Date: 2024
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DOI: 10.1007/s11135-023-01827-0

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