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Chrisogonus K. Onyekwere

Publications (7)

Chris-Jerry Distribution and Its Applications

Chrisogonus K. Onyekwere & Okechukwu J. Obulezi · Asian Journal of Probability and Statistics · 2022

In this paper, a new one-parameter distribution named Chris-Jerry is suggested from two component mixture of Exponential (\(\theta\)) distribution and Gamma(3; \(\theta\)) distribution with mixing proportion \(p=\frac{\theta}{\theta + 2}\) having a flexibility advantage in modeli...

Open access Research Article 10.9734/ajpas/2022/v20i130480

Inverted Power Rama Distribution with Applications to Life Time Data

Chrisogonus K. Onyekwere, George A. Osuji & Samuel U. Enogwe · Asian Journal of Probability and Statistics · 2020

In this paper, we introduced the Inverted Power Rama distribution as an extension of the Inverted Rama distribution. This new distribution is capable of modeling real life data with upside down bathtub shape and heavy tails. Mathematical and statistical characteristics such as th...

Open access Research Article 10.9734/ajpas/2020/v9i430231

Inference on the Parameters of Zubair-Exponential Distribution with Application to Survival Times of Guinea Pigs

Ifeanyi C. Anabike, Chinyere P. Igbokwe, Chrisogonus K. Onyekwere & Okechukwu J. Obulezi · Journal of Advances in Mathematics and Computer Science · 2023

In this paper, we derived a sub-model of Zubair-G familiy of distribution named Zubair-Exponential distribution with two parameters. Simulation of the Estimates of the parameters based on some classical methods are obtained. The likelihood equations and the maximum likelihood est...

Open access Research Article 10.9734/jamcs/2023/v38i71769

On Modified Inverse Shanker Distribution and Applications

Grace O. Nwadiogbu, F. C. Eze & Chrisogonus K. Onyekwere · Asian Journal of Probability and Statistics · 2022

Due to variations in life occurrences, descriptions or interpretations and predictions with some level of accuracy has become challenging. In order to use models to solve these problems, statisticians have provided numerous number of probability distributions which can be used to...

Open access Research Article 10.9734/ajpas/2022/v18i430456

Inverted Power Ishita Distribution and Its Application to Lifetime Data

A. Omoruyi Frederick, George A. Osuji & Chrisogonus K. Onyekwere · Asian Journal of Probability and Statistics · 2022

In this paper, a new distribution, named ‘the Inverted Power Ishita distribution’, was introduced.  It is an extension of the Ishita distribution and its capable of modelling real life data with upside down bathtub shape and heavy tails was introduced. Mathematical and statistica...

Open access Research Article 10.9734/ajpas/2022/v18i130433

Generalized Inverse Power Sujatha Distribution with Applications

O. Michael Okoli, George A. Osuji & Chrisogonus K. Onyekwere · Asian Journal of Probability and Statistics · 2021

In this paper, we present a new lifetime distribution known as the generalized inverse power Sujatha distribution. The statistical and mathematical properties of the new distribution such as the moment and moment generating function, Renyi entropy and distribution of order statis...

Open access Research Article 10.9734/ajpas/2021/v15i330354

Generalized Weighted Rama Distribution: Properties and Application to Model Lifetime Data

Samuel U. Enogwe, Chisimkwuo John, Happiness O. Obiora-Ilouno & Chrisogonus K. Onyekwere · Asian Research Journal of Mathematics · 2021

In this paper, we propose a new lifetime distribution called the generalized weighted Rama (GWR) distribution, which extends the two-parameter Rama distribution and has the Rama distribution as a special case. The GWR distribution has the ability to model data sets that have posi...

Open access Research Article 10.9734/arjom/2020/v16i1230250