Two Characterizations of Gamma Distribution in terms of sth Conditional Moments
Journal Title: JOURNAL OF ADVANCES IN MATHEMATICS - Year 2014, Vol 5, Issue 2
Abstract
The gamma distribution is highly important in applications and data modeling. It is usually used to model waiting times, the size of insurance claims, and rainfalls. It also serves as a conjugate prior distribution for various types the conjugate prior to many likelihood distributions the exponential distribution. In this paper we state and prove two new characterizations of the two parameter gamma distribution by establishing a connection between s-right truncated moments (s-left truncated moments) and the reversed hazard rate (hazard rate). These characterization results are easier to check in data analysis. Besides, our results generalize some of the well known theoretical results of Koicheva (1993) and Ahsanullah et al., 2012.
Authors and Affiliations
Ahmed Affify, A. N. Ahmed, Z. M. Nofal
Keywords
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- EP ID EP651267
- DOI 10.24297/jam.v5i2.3683
- Views 191
- Downloads 0
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