Abstract

BRU CORDERO, O; BRANGO GARCIA, H; JARAMILLO ELORZA, M. C  and  LOPEZ, M. P. Application of the Copula-Graphic Estimator in Juvenile Bocachico Prochilodus Magdalenae Subjected to Different Levels of Salinity. Ciencia en Desarrollo [online]. 2016, vol.7, n.1, pp.93-102. ISSN 0121-7488.

Abstract In this paper, it is estimated the role of survival under dependence using the copula-graphic estimator proposed by [2]. A simulation study is carried out for Weibull failure times, with two failure modes and different percentages of censorship, where the survival function is compared through the copula-graphic estimator, with the survival estimation assuming independence from two failure modes. It is shown a study application carried out in the Fishing Research Center of the University of Cordoba-CINPIC (Colombia), in which the mortality of juvenile fish subjected to different levels of salinity is wanted to be analyzed, and what constitutes the failure modes or causes of death (10 ppm and 12 ppm). It was found that assuming independence in the failure modes the survival function, underestimates the true survival rate, which is estimated in a reliable manner with the estimator copula graphic, in which the dependency between the failure modes is taken into account.

Keywords : Censored; Estimator Copula-Graphic; Survival Function.

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