Centre for Mathematics, University of Coimbra

<Reference List>
Type:	Preprint
National /International:	International
Title:	Iterated failure rate monotonicity and ordering relations within Gamma and Weibull distributions
Publication Date:	2017-03-13
Authors:	- Idir Arab - Paulo Eduardo Oliveira
Abstract:	Stochastic ordering of distributions of random variables may be defined by the relative convexity of the tail functions. This has been extended to higher order stochastic orderings, by iteratively reassigning tail-weights. The actual verification of those stochastic orderings is not simple, as this depends on inverting distribution functions for which there may be no explicit expression. The iterative definition of distributions, of course, contributes to make that verification even harder. We have a look at the stochastic ordering, introducing a method that allows for explicit usage, applying it to the Gamma and Weibull distributions, giving a complete description of the order relations within each of those families.
Institution:	DMUC 17-16
Online version:	http://www.mat.uc.pt...prints/eng_2017.html
Download:	Not available