Department of Statistics, Federal University of Technology, Owerri, Nigeria - Articles

A Class of Estimators for Population Ratio in Simple Random Sampling Using Variable Transformation (Articles)

A. C. Onyeka, V. U. Nlebedim, C. H. Izunobi

Open Journal of Statistics Vol.4 No.4, June 20, 2014

DOI: 10.4236/ojs.2014.44029 3,456 Downloads 6,325 Views Citations
Estimation of Population Ratio in Post-Stratified Sampling Using Variable Transformation (Articles)

Aloy Chijioke Onyeka, Chinyeaka Hostensia Izunobi, Iheanyi Sylvester Iwueze

Open Journal of Statistics Vol.5 No.1, January 20, 2015

DOI: 10.4236/ojs.2015.51001 4,375 Downloads 10,923 Views Citations
Separate-Type Estimators for Estimating Population Ratio in Post-Stratified Sampling Using Variable Transformation (Articles)

Aloy Chijioke Onyeka, Chinyeaka Hostensia Izunobi, Iheanyi Sylvester Iwueze

Open Journal of Statistics Vol.5 No.1, January 30, 2015

DOI: 10.4236/ojs.2015.51004 3,256 Downloads 4,725 Views Citations
The Usefulness of Dynamic Programming in Course Allocation in the Nigerian Universities (Articles)

Harrison O. Amuji, Geoffrey U. Ugwuanyim, Chukwudi J. Ogbonna, Hycinth C. Iwu, Bridget N. Okechukwu

Open Journal of Optimization Vol.6 No.4, December 29, 2017

DOI: 10.4236/ojop.2017.64012 1,029 Downloads 2,653 Views Citations
Analysis of the Impact of Treasury Single Account on the Performance of Banks in Nigeria (Articles)

Chukwudi J. Ogbonna, Harrison O. Amuji

Open Journal of Statistics Vol.8 No.3, June 7, 2018

DOI: 10.4236/ojs.2018.83029 1,771 Downloads 11,125 Views Citations
Optimal Water Pipe Replacement Policy (Articles)

Harrison O. Amuji, Chukwudi J. Ogbonna, Geoffrey U. Ugwuanyim, Hycinth C. Iwu, Okechukwu B. Nwanyibuife

Open Journal of Optimization Vol.7 No.2, June 8, 2018

DOI: 10.4236/ojop.2018.72002 1,130 Downloads 3,230 Views Citations
On the Paradox of the Duality of Autoregressive and Moving Average Processes (Articles)

Elechi Onyemachi, Iheanyi Sylvester Iwueze, Eleazar Chukwunenye Nwogu

Journal of Applied Mathematics and Physics Vol.10 No.2, February 28, 2022

DOI: 10.4236/jamp.2022.102043 226 Downloads 1,690 Views Citations
Random Coefficient Modelling of the Global Effect of Exchange and Monetary Policy Rates on Inflation (2) (Articles)

Chioma Okoronkwo, Geoffery Uzodinma Ugwuanyim, Hycinth Chukwudi Iwu, Harrison Obiora Amuji

Open Journal of Statistics Vol.15 No.6, December 24, 2025

DOI: 10.4236/ojs.2025.156027 45 Downloads 214 Views Citations
Interrupted Time Series Analysis of Military and Civilian Regimes in Nigeria: A Statistical Evidence from Gross Domestic Product (GDP) (Articles)

Desmond Chekwube Bartholomew, Geoffrey Uzodinma Ugwuanyim, Ukamaka Cynthia Orumie, Francis Attah Egwumah

Open Journal of Statistics Vol.13 No.4, August 30, 2023

DOI: 10.4236/ojs.2023.134031 245 Downloads 1,409 Views Citations
Performance Evaluation of Motor Insurance Companies: Panel Data Evidence from Nigeria (Articles)

G. U. Ugwuanyim, D. E. Onwuegbuchunam, D. C. Bartholomew, C. C. Anikpe

Journal of Transportation Technologies Vol.11 No.3, May 19, 2021

DOI: 10.4236/jtts.2021.113021 536 Downloads 3,099 Views Citations
Modelling of Pre-Sex Selection: An Effective Method for Family Planning and Control of Overpopulation (Articles)

Harrison O. Amuji, Cecilia N. Aronu, Obioma G. Onukwube, Chinemerem Igboanusi

Open Journal of Optimization Vol.10 No.2, June 17, 2021

DOI: 10.4236/ojop.2021.102003 313 Downloads 2,011 Views Citations
Some Applications of Higher Moments of the Linear Gaussian White Noise Process (Articles)

I. S. Iwueze, C. O. Arimie, H. C. Iwu, E. Onyemachi

Applied Mathematics Vol.8 No.12, December 29, 2017

DOI: 10.4236/am.2017.812136 1,371 Downloads 3,927 Views Citations
On the Use of Second and Third Moments for the Comparison of Linear Gaussian and Simple Bilinear White Noise Processes (Articles)

Christopher Onyema Arimie, Iheanyi Sylvester Iwueze, Maxwell Azubuike Ijomah, Elechi Onyemachi

Open Journal of Statistics Vol.8 No.3, June 15, 2018

DOI: 10.4236/ojs.2018.83037 1,123 Downloads 3,067 Views Citations
A Cox Proportional Hazard Model Approach to Age at First Sexual Intercourse in Nigeria (Articles)

Chukwudi Paul Obite, Desmond Chekwube Bartholomew, Iheoma Blessing Duru, Joan Ismaila-Cosmos, Chidiebere Chukwuemeka

Open Journal of Statistics Vol.10 No.2, April 10, 2020

DOI: 10.4236/ojs.2020.102018 680 Downloads 2,171 Views Citations
This article belongs to the Special Issue on Applied Statistics
Iwueze’s Distribution and Its Application (Articles)

Onyemachi Elechi, Emmanuel W. Okereke, Iwu Hycinth Chukwudi, Kiwu Lawrence Chizoba, Owolabi Taiwo Wale

Journal of Applied Mathematics and Physics Vol.10 No.12, December 30, 2022

DOI: 10.4236/jamp.2022.1012251 250 Downloads 1,040 Views Citations
Modeling the Nigerian Bonny Light Crude Oil Price: The Power of Fuzzy Time Series (Articles)

Desmond Chekwube Bartholomew, Ukamaka Cynthia Orumie, Chukwudi Paul Obite, Blessing Iheoma Duru, Felix Chikereuba Akanno

Open Journal of Modelling and Simulation Vol.9 No.4, September 27, 2021

DOI: 10.4236/ojmsi.2021.94024 382 Downloads 1,918 Views Citations
Modeling of Catfish Farm Using Lexicographic Linear Goal Programming (Articles)

Ukamaka Cynthia Orumie, Egenti Francis Nzerem, Chekwube Bartholomew Desmond

American Journal of Operations Research Vol.12 No.3, May 20, 2022

DOI: 10.4236/ajor.2022.123006 347 Downloads 1,588 Views Citations
Comparison of Two Time Series Decomposition Methods: Least Squares and Buys-Ballot Methods (Articles)

I. S. Iwueze, E. C. Nwogu, V. U. Nlebedim, J. C. Imoh

Open Journal of Statistics Vol.6 No.6, December 21, 2016

DOI: 10.4236/ojs.2016.66091 2,302 Downloads 6,302 Views Citations
Optimal Classifier for Fraud Detection in Telecommunication Industry (Articles)

Harrison Obiora Amuji, Etus Chukwuemeka, Emeka Maxwel Ogbuagu

Open Journal of Optimization Vol.8 No.1, February 19, 2019

DOI: 10.4236/ojop.2019.81002 1,262 Downloads 2,806 Views Citations
Comparison of Methods of Estimating Missing Values in Time Series (Articles)

I. S. Iwueze, E. C. Nwogu, V. U. Nlebedim, U. I. Nwosu, U. E. Chinyem

Open Journal of Statistics Vol.8 No.2, April 30, 2018

DOI: 10.4236/ojs.2018.82025 1,621 Downloads 6,354 Views Citations

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