26368

INVERTED GOMPERTZ DISTRIBUTION: PROPERTIES AND ESTIMATION

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Last updated: 04 Jan 2025

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Abstract

The inverted Gompertz distribution,and some of its properties are investigated.  The distribution of the order statistic of the inverted Gompertz  distribution and some special cases are presented. Transformed distributions of this distribution are derived.  Based on Type II censored samples, the estimation of the shape and scale parameters, reliability and hazard rate functions are obtained using the maximum likelihood method. The uniformly minimum variance unbiased estimate of a function of the shape parameter is obtained assuming that the scale parameter is known. Asymptotic variances and covariances of the maximum likelihood estimators are found. Confidence intervals of the parameters are also given. Via a Monte Carlo simulation study, the estimated risks, squared bias and variances of the estimates are computed from different sample sizes.  

DOI

10.21608/jsfc.2012.26368

Keywords

Inverted Gompertz distribution, Reliability function, hazard rate function, Type II censored samples, Maximum Likelihood Method, uniformly minimum variance unbiased estimate

Authors

First Name

Rabab

Last Name

Abd EL-Kader

MiddleName

E.

Affiliation

Rabab E. Abd EL-Kader, Amina E. Abu-Hussien and Soad A. AL-Gendy Department of Statistics, Faculty of Commerce, AL-Azhar University, Girls` Branch, Cairo, Egypt

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Volume

9

Article Issue

1

Related Issue

4733

Issue Date

2012-01-01

Receive Date

2011-07-25

Publish Date

2012-01-01

Page Start

1

Page End

21

Print ISSN

1687-322X

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https://jsfc.journals.ekb.eg/article_26368.html

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https://jsfc.journals.ekb.eg/service?article_code=26368

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10

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المقالة الأصلية

Type Code

761

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Journal

Publication Title

المجلة العلمية لقطاع کليات التجارة

Publication Link

https://jsfc.journals.ekb.eg/

MainTitle

INVERTED GOMPERTZ DISTRIBUTION: PROPERTIES AND ESTIMATION

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Article

Created At

22 Jan 2023