est1bs {bs} | R Documentation |
The function est1bs()
estimates the parameters alpha and beta of the BSD from a sample of observations by using the likelihood
method (MLE) and the mean-mean estimator; see Birnbaum and Saunders (1969).
est1bs(x)
x |
Vector of observations. |
The function est1bs()
returns a list with four elements:
alpha |
Estimation of alpha by using MLE method. |
beta |
Estimation of beta by using MLE method. |
beta.start |
Estimation of mean-mean estimator. |
iterations |
Number of iterations of the process. |
Víctor Leiva <victor.leiva@uv.cl>, Hugo Hernández <hugo.hernande@msn.com>, and Marco Riquelme <mriquelm@ucm.cl>.
Birnbaum, Z. W. and Saunders, S. C. (1969). Estimation for a family of life distributions with applications to fatigue. J. Appl. Probab. 6(2): 328-347.
Leiva, V., Hernández, H., and Riquelme, M. (2006). A New Package for the Birnbaum-Saunders Distribution. Rnews, 6/4, 35-40. (http://www.r-project.org)
## Load package library(bs) ## Load data sets data(psi31) ## Examples for parameters estimation est1bs(psi31) est2bs(psi31) est3bs(psi31)