| Summary: | In this paper, it is estimated the role of survival under dependence using the copula-graphic estimatorproposed by [2]. A simulation study is carried out for Weibull failure times, with two failure modes anddifferent percentages of censorship, where the survival function is compared through the copula-graphicestimator, 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.
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