American Journal of Theoretical and Applied Statistics

Archive

Volume 12, Issue 3, May 2023

  • Supervised Machine Learning and Bayesian Regression Kriging with Application to COVID-19 Incidences in Sub-Saharan Africa

    Safari Godfrey Lyece, Samuel Mwalili, Joseph Kyalo Mung’atu

    Issue: Volume 12, Issue 3, May 2023
    Pages: 37-42
    Received: 19 April 2023
    Accepted: 15 May 2023
    Published: 24 May 2023
    DOI: 10.11648/j.ajtas.20231203.11
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    Abstract: Since COVID-19 invasion of the World, human life has been affected greatly. Several studies have shown a positive correlation between COVID-19 infections and pre-existing conditions such as Diabetes, Cancer, Tuberculosis, and Hypertension. In this study, we would like to determine whether demographic variables have a contribution to the spread of C... Show More
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  • Bayesian Interval Estimation in a Non-Homogeneous Poisson Process with Delayed S-Shaped Intensity Function

    Otieno Collins, Orawo Luke Akong’o, Matiri George Munene, Justin Obwoge Okenye

    Issue: Volume 12, Issue 3, May 2023
    Pages: 43-50
    Received: 11 April 2023
    Accepted: 16 May 2023
    Published: 5 June 2023
    DOI: 10.11648/j.ajtas.20231203.12
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    Abstract: Software reliability assessment has been explored by many researchers over the past decades. With the increasing development of new complex software systems, accurate methods for estimating reliability model parameters are needed. Facilitated by the increasing use of computer systems in various sectors such as air traffic control, banking, industri... Show More
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  • Monte Carlo Simulation and Derivation of Chi-Square Statistics

    Tofik Mussa Reshid

    Issue: Volume 12, Issue 3, May 2023
    Pages: 51-65
    Received: 6 April 2023
    Accepted: 22 May 2023
    Published: 27 June 2023
    DOI: 10.11648/j.ajtas.20231203.13
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    Abstract: Computer simulation has become an important tool in teaching statistics. Teaching using computer simulation would enhance the understanding of the concept using visual illustrations. This paper describes how to use simulation in R-programming language to perform a chi-square test. We try to show the distribution of most commonly used chi-square sta... Show More
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