Proposal of a new distribution in PERT methodology |
| |
Authors: | Catalina Beatriz García García José García Pérez Salvador Cruz Rambaud |
| |
Institution: | 1.Departamento de Métodos Cuantitativos para la Economía y la Empresa,Universidad de Granada,Granada,Spain;2.Departamento de Economía Aplicada,Universidad de Almería,Almería,Spain;3.Departamento de Dirección y Gestión de Empresas,Universidad de Almería,Almería,Spain |
| |
Abstract: | The aim of this paper is to present the generalized biparabolic distribution (GBP) as a good candidate to be utilized as the
distribution underlying to PERT methodology (Malcolm et al. in Oper. Res. 7:646–669, 1959). To do this and following the criteria established by Taha (Investigación de Operaciones, 1981) and Herrerías (Estudios de Economía Aplicada, pp. 89–112, 1989), we will compare the mean and variance estimates derived from each proposed density function, viz beta, two-sided power
(TSP) and GBP distributions. Also we will compare the estimates contributed by the mesokurtic and of constant variance families
of the aforementioned distributions. The main conclusion is that the GBP distribution is the most convenient to be used in
the PERT methodology because its mean is almost as moderate as that of trapezoidal and its variance is much higher than that
of the rest of distributions. As a consequence, it can be stated that the GBP distribution is an alternative to the other
four-parameter distributions. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|