Abstract

The gamma Burr XII distributions: Theory and applications

Highlights

  • The Burr XII (BXII) distribution first appears as part of the Burr system of distributions

  • The likelihood ratio (LR) statistic for testing H0 : a = 1 versus H : a = 1, which is equivalent to compare the Zografos-Balakrishnan Burr XII (ZBXII) and BXII distributions, is given by w = 2{l(a, s, d, c) − l(1, s, d, c)}, where a, s, d and c are the maximum likelihood estimators (MLEs) under H and s, d and c are the estimates under H0

  • We introduce a four-parameter distribution, called the Zografos-Balakrishnan Burr XII (ZBXII) distribution

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Summary

Introduction

The Burr XII (BXII) distribution first appears as part of the Burr system of distributions. Following Zografos and Balakrishnan (2009) and Ristic and Balakrishnan (2012) proposals, we introduce a new four-parameter distribution called the Zografos-Balakrishnan Burr XII (ZBXII) distribution. Since the RB-G family’s cdf and pdf have a similar structure to the ZB-G family, we present some mathematical properties and expansions for the so-called Ristic-Balakrishnan Burr XII (RBXII) model. These results follow analogously to those of the ZBXII distribution but with different weights in their linear representations (see Section 3).

Models definition
The ZBXII distribution
The RBXII distribution
Useful expansions
Quantile function
Moments and generating function of X
Mean deviations
Maximum-likelihood estimation
Simulation study
Applications
Stress data
Fibres data
11. Concluding remarks

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