School of Economics

 Invites you to a 

Econometrics seminar presented by

Ho Leung (Ryan) Ip

(Charles Sturt University – Wagga Wagga)

A Mixture Distribution for Modelling Bivariate Ordinal Data

Wednesday 18 October 2023

2.00pm – 3.30pm

Level 6 Seminar Room (650)

A02 Social Sciences Building
Camperdown Campus

The University of Sydney NSW 2006

 Ordinal responses often arise from surveys which require respondents to rate items on a Likert scale. Since most surveys contain more than one question, the data collected are multivariate in nature, and the associations between different survey items are usually of considerable interest. In this presentation, a mixture distribution, called the combination of uniform and binomial (CUB), will be revisited. Under CUB, each response is assumed to originate from either the respondent’s uncertainty or the actual feeling towards the survey item. An extension of the univariate CUB model to the bivariate case will be introduced. The proposed model allows the associations between the unobserved uncertainty and feeling components of the responses to be estimated, a distinctive feature compared to previous attempts using copula-based approaches. This presentation will describe the underlying logic and both theoretical and practical aspects of the proposed model.

 For further information contact: Econometrics seminar series coordinator Dr Ye Lu (ye.lu1@sydney.edu.au)

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