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Modelling scale effects in rating data: a Bayesian approach

Author

Listed:
  • Maria Iannario

    (University of Naples Federico II)

  • Maria Kateri

    (RWTH Aachen University)

  • Claudia Tarantola

    (University of Pavia)

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.

Suggested Citation

  • Maria Iannario & Maria Kateri & Claudia Tarantola, 2024. "Modelling scale effects in rating data: a Bayesian approach," Quality & Quantity: International Journal of Methodology, Springer, vol. 58(5), pages 4053-4071, October.
    • Handle: RePEc:spr:qualqt:v:58:y:2024:i:5:d:10.1007_s11135-023-01827-0
    DOI: 10.1007/s11135-023-01827-0
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