Happiness O. Obiora-Ilouno

Inverse Hamza Distribution: Properties and Applications to Lifetime Data

Okpala I. Frank, Happiness O. Obiora-Ilouno & Omoruyi A. Frederick · Asian Journal of Probability and Statistics · 2023

In this paper, a new distribution, named ‘the Inverted Hamza distribution’, was introduced.  It is an extension of the Hamza distribution that can model real-world data with an upside-down bathtub shape and heavy tails.  Mathematical and statistical characteristics such as the qu...

Open access Research Article 10.9734/ajpas/2023/v23i1496

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