Beta
341665

Different Approaches for Outlier Detection in Life Testing Scenarios

Article

Last updated: 29 Dec 2024

Subjects

-

Tags

Mathematical Statistics

Abstract

 Sometimes the data to be analyzed is not complete, and this may be due to censoring. There are two type of censoring, namely Type I and Type II. Whether the censoring was intentional or accidental, it is no guarantee that the data does not include suspected observations (too small or too large). Theses suspected observations might invalidate the estimate of the parameters of the model. One way to remedy this is to use trimming or Winsorizing. Traditional methods of estimation such as maximum likelihood, least squares, Bayesian, and moments methods, usually, work well for ordinary cases. However, these methods of estimations get affected seriously with outlier observations. This suggest using methods of estimation that utilize trimmed data, such as L-moment and TL-moment.  In this paper, we used six versions of L-moment and Trimmed L-moments with censored data for estimating the parameters of the Lomax distribution. The performance of the presented methods were compared with each other through a simulation study besides two real data sets. The results show that, for some cases, the use of Type-BD method is a better option than other methods. Our approach is similar to that of \cite{Zafrakou} which utilized the L-moments for the estimation of the parameters of a statistical distribution in the presence of censored observations.

DOI

10.21608/cjmss.2024.254148.1033

Keywords

censored data, Linear Moments, Lomax distribution, Outlier Data, Trimmed Linear Moments

Authors

First Name

Hager

Last Name

Ibrahim

MiddleName

Ahmad

Affiliation

Higher Institute of Information Technology, Badr City, Cairo, Egtpt

Email

dr.hager.ahmad10@gmail.com

City

-

Orcid

0000-0003-4548-9420

First Name

Mahmoud

Last Name

Mahmoud

MiddleName

Riad

Affiliation

Faculty of Graduate Studies for Statistical Research Cairo University, Egypt

Email

mrmahmoud@cu.edu.eg

City

cairo

Orcid

0000-0002-5126-225x

First Name

Moshera

Last Name

Ahmad

MiddleName

-

Affiliation

El Gazeera High Institute for Computer and Management Information System, Egypt

Email

moshera1999@yahoo.com

City

Zagazig

Orcid

0009-0001-1447-3023

First Name

Rasha

Last Name

Mandouh

MiddleName

-

Affiliation

Faculty of Graduate Studies for Statistical Research, Cairo University, Giza, Egypt

Email

rshmndoh@cu.edu.eg

City

Giza

Orcid

0000-0001-5181-0386

Volume

3

Article Issue

1

Related Issue

44604

Issue Date

2024-04-01

Receive Date

2023-12-12

Publish Date

2024-04-01

Page Start

203

Page End

227

Print ISSN

2974-3435

Online ISSN

2974-3443

Link

https://cjmss.journals.ekb.eg/article_341665.html

Detail API

https://cjmss.journals.ekb.eg/service?article_code=341665

Order

341,665

Type

Original Article

Type Code

2,545

Publication Type

Journal

Publication Title

Computational Journal of Mathematical and Statistical Sciences

Publication Link

https://cjmss.journals.ekb.eg/

MainTitle

Different Approaches for Outlier Detection in Life Testing Scenarios

Details

Type

Article

Created At

29 Dec 2024