International Journal of Data Science and Analysis

Volume 5, Issue 1, February 2019

  • An Estimation of Unknown Variance of a Normal Distribution: Application to Borno State Rainfall Data

    Adegoke Taiwo Mobolaji, Nicholas Pindar Dibal, Yahaya Abdullahi Musa

    Issue: Volume 5, Issue 1, February 2019
    Pages: 1-5
    Received: 26 December 2018
    Accepted: 15 February 2019
    Published: 28 March 2019
    Abstract: The Bayesian estimation of unknown variance of a normal distribution is examined under different priors using Gibbs sampling approach with an assumption that mean is known. The posterior distributions for the unknown variance of the Normal distribution were derived using the following priors: Inverse Gamma distribution, Inverse Chi-square distribut... Show More
  • About the Evaluation of the Effectiveness of Various Methods of Diagnosis, Prediction and Classification Presented in the Literature

    Yury Mikhailovich Petrenko

    Issue: Volume 5, Issue 1, February 2019
    Pages: 6-12
    Received: 19 January 2019
    Accepted: 19 March 2019
    Published: 10 May 2019
    Abstract: The literature presents a large number of very different ways to diagnose, predict and classify. In support of their usefulness and effectiveness, various parameters are often used, from a large number of them, which are not always necessary and sufficient, since they do not unequivocally characterize efficiency. The purpose of this work was to bui... Show More