Inverse Lindley power series distributions: a new compounding family and regression model with censored data

Abstract

This paper introduces a new class of distributions by compounding the inverse Lindley distribution and power series distributions which is called compound inverse Lindley power series (CILPS) distributions. An important feature of this distribution is that the lifetime of the component associated with a particular risk is not observable, rather only the minimum lifetime value among all risks is observable. Further, these distributions exhibit an unimodal failure rate. Various properties of the distribution are derived. Besides, two special models of the new family are investigated. The model parameters of the two sub-models of the new family are obtained by the methods of maximum likelihood, least square, weighted least square and maximum product of spacing and compared them using the Monte Carlo simulation study. Besides, the log compound inverse Lindley regression model for censored data is proposed. Three real data sets are analyzed to illustrate the flexibility and importance of the proposed models.

Keywords:

• Lindley distribution
• inverse Lindley power series distributions
• regression model
• maximum-likelihood estimators
• Monte Carlo simulation

Acknowledgments

We would like to thank the Editor-in-Chief, associate editor and two referees for useful comments and suggestions that have significantly improved this article.

Disclosure statement

No potential conflict of interest was reported by the author(s).