New class of Johnson SB distributions and its associated regression model for rates and proportions

被引:50
作者
Lemonte, Artur J. [1 ]
Bazan, Jorge L. [2 ]
机构
[1] Univ Fed Pernambuco, CCEN, Dept Estat, Recife, PE, Brazil
[2] Univ Sao Paulo, Dept Matemat Aplicada & Estat, Sao Carlos, SP, Brazil
关键词
Johnson S-B distribution; Proportions; Rates; Regression model; Symmetric distributions; BETA REGRESSION; INFLUENCE DIAGNOSTICS;
D O I
10.1002/bimj.201500030
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
By starting from the Johnson S-B distribution pioneered by Johnson (1949), we propose a broad class of distributions with bounded support on the basis of the symmetric family of distributions. The new class of distributions provides a rich source of alternative distributions for analyzing univariate bounded data. A comprehensive account of the mathematical properties of the new family is provided. We briefly discuss estimation of the model parameters of the new class of distributions based on two estimation methods. Additionally, a new regression model is introduced by considering the distribution proposed in this article, which is useful for situations where the response is restricted to the standard unit interval and the regression structure involves regressors and unknown parameters. The regression model allows to model both location and dispersion effects. We define two residuals for the proposed regression model to assess departures from model assumptions as well as to detect outlying observations, and discuss some influence methods such as the local influence and generalized leverage. Finally, an application to real data is presented to show the usefulness of the new regression model.
引用
收藏
页码:727 / 746
页数:20
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