Advanced search
Start date
Betweenand
(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Zero-one augmented beta and zero-inflated discrete models with heterogeneous dispersion for the analysis of student academic performance

Full text
Author(s):
Pinheiro, Hildete P. [1] ; Maia, Rafael P. [1] ; Lima Neto, Eufrasio A. [2] ; Rodrigues-Motta, Mariana [1]
Total Authors: 4
Affiliation:
[1] Univ Estadual Campinas, Campinas, SP - Brazil
[2] Univ Fed Paraiba, Dept Stat, Joao Pessoa, Paraiba - Brazil
Total Affiliations: 2
Document type: Journal article
Source: Statistical Methods and Applications; v. 28, n. 4, p. 749-767, DEC 2019.
Web of Science Citations: 0
Abstract

The purpose of this work is to present suitable statistical methods to study the performance of undergraduate students based on the incidence/proportion of failed courses/subjects. Three approaches are considered: first, the proportion of failed subjects is modeled considering a zero-one augmented beta distribution; second, discrete models are used to model the probability of failing subjects with logit link; third, incidence is modeled using regression for count data with log link and the logarithm of the total number of subjects as an offset. Zero-inflated versions are used to account for the excess of zeros in the data when appropriate and we also considered the heterogeneous dispersion parameter, when applicable. Overall, the zero-inflated negative binomial and zero inflated beta-binomial models, with regression on the mean and the dispersion parameters, present good measures of goodness of fit to the data. The database consists of records of Engineering major students who entered the State University of Campinas, Brazil, from 2000 to 2005. Entrance exam scores and demographic variables as well as socio-economic status are considered as covariates in the models. (AU)

FAPESP's process: 14/03043-5 - XXVII International Biometric Conference
Grantee:Hildete Prisco Pinheiro
Support type: Research Grants - Meeting - Abroad
FAPESP's process: 11/15047-7 - Applications of diversity measures and quasi U-Statistics
Grantee:Hildete Prisco Pinheiro
Support type: Scholarships abroad - Research