MAXIMUM LIKELIHOOD ESTIMATION IN GENERALIZED GAMMA TYPE MODEL

Authors

  • Vinod Kumar Deptt. of Maths, Stats. & Comp. Sc., G. B. Pant Univ. of Ag. & Tech., Pantnagar, India.
  • Gaurav Shukla Deptt. of Statistics, G.F. (P.G.) College, Shahjahanpur, India.

Keywords:

Generalized Gamma Model, Maximum Likelihood Estimator (MLE), Reliability Function, Hazard Rate Function

Abstract

In the present paper, the maximum likelihood estimates of the two parameters of a generalized gamma type model have been obtained directly by solving the likelihood equations as well as by reparametrizing the model first and then solving the likelihood equations (as done by Prentice, 1974) for fixed values of the third parameter. It is found that reparametrization does neither reduce the bulk nor the complexity of calculations. as claimed by Prentice (1974). The procedure has been illustrated with the help of an example. The distribution of MLE of θ along with its properties has also been obtained.

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References

Davis, D.J. (1952). An analysis of some failure data. Journal of American Statistical

Association, Vol. 47, pp 113-150.

Lawless, J.F. (1980). Inference in the generalized gamma and log gamma

distribution. Technometrics, Vol. - 22, No. -3, pp 409-419.

Lawless, J.F. (1982). Statistical Models and Methods for Life Time Data. John Wiley

& Sons, New York.

Prentice, R.L. (1974). A log-gamma model and its maximum likelihood estimation.

Biometrika, Vol.-61, pp 539-544.

Shukla,G. and Kumar,V. (2006). Use of generalized gamma type model in life failure

data. Indian Journal of Applied Statistics, Vol. 10, pp 13-20.

Sinha, S.K. (1986). Reliability and Life Testing, Wiley Eastern, New Delhi.

Stacy, E.W. (1962). A generalization of the gamma distribution, Annals of

Mathematical Statistics, Vol.-33, pp 1187-1192.

Stacy, E.W. and Mihram, G.A. (1965). Parameter estimation for a generalized

gamma distribution, Technometrics, Vol.-7, pp 349-358.

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Published

2010-06-01

How to Cite

Kumar, V. ., & Shukla, G. . (2010). MAXIMUM LIKELIHOOD ESTIMATION IN GENERALIZED GAMMA TYPE MODEL. Journal of Reliability and Statistical Studies, 3(01), 43–51. Retrieved from https://journals.riverpublishers.com/index.php/JRSS/article/view/22045

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