Journal
PAKISTAN JOURNAL OF STATISTICS AND OPERATION RESEARCH
Volume 18, Issue 4, Pages 1049-1066Publisher
UNIV PUNJAB
DOI: 10.18187/pjsor.v18i4.4106
Keywords
Anderson-Darling estimator; Weighted distributions; Lindley distribution; Maximum likelihood; Bayesian estimation; Moments
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The choice of the most suitable statistical distribution for modeling data is crucial. This paper introduces a new one-parameter lifetime distribution, called the weighted-Lindley distribution, which is more flexible for modeling real data with high skewness and kurtosis. The paper investigates the properties of the distribution, estimates its parameter using classical and Bayesian methods, and analyzes its behavior through graphical simulation and real data analysis.
The choice of the most suitable statistical distribution for modeling data is very important. Generally, the new distributions are more flexible to model real data that present a high degree of skewness and kurtosis. In this paper, we define a new one-parameter lifetime distribution, so-called weighted-Lindley distribution. Some of its basic properties are investigated. Some classical and Bayesian methods of estimation have been used for estimating its parameter. The behavior of these estimators were investigated by a graphical simulation study. A real data set is analyzed to investigate the flexibility of the new weighted-Lindley distribution.
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