International Journal of Data Science and Analysis

Volume 6, Issue 6, December 2020

  • Post-Harvest Loss Modeling of Maize Produce in Kenya

    Julius Sang, Anthony Wanjoya, Antony Ngunyi

    Issue: Volume 6, Issue 6, December 2020
    Pages: 163-169
    Received: 6 October 2020
    Accepted: 21 October 2020
    Published: 30 October 2020
    Abstract: The classical linear model is commonly used to model the relationship between a response variable and a set of explanatory variables. The normality assumption is usually required so as to ease the hypothesis testing for the various linear regression models but it can be misleading for a proportional response variable that is bounded. This makes the... Show More
  • Bayesian Analysis of Zero-Truncated Poisson Model: Application to the Self-Controlled Case-series Design

    Henry Athiany, Anthony Wanjoya, George Orwa, Samuel Mwalili

    Issue: Volume 6, Issue 6, December 2020
    Pages: 170-182
    Received: 12 October 2020
    Accepted: 28 October 2020
    Published: 4 November 2020
    Abstract: A Bayesian Self-Controlled Case-Series (BSCCS) method is proposed and used to estimate the relative risk of an adverse drug event (ADE) given transient exposure to a drug or vaccine. Markov Chain Monte Carlo (MCMC) methods through WinBUGS are used to estimate parameters of the model given different settings and sample sizes. The method explores ful... Show More
  • Developing and Implementing Big Data Analytics in Marketing

    Dina Darwish

    Issue: Volume 6, Issue 6, December 2020
    Pages: 183-203
    Received: 30 October 2020
    Accepted: 11 November 2020
    Published: 19 November 2020
    Abstract: Big Data represents the greatest game-changing chance and change in outlook for marketing since the creation of the telephone or the Web going standard. Big Data alludes to the ever-expanding volume, velocity, variety, variability and multifaceted nature of data. Big Data is the key result of the new promoting scene, conceived from the computerized... Show More
  • Non-linear Approximations of Shape and Location Parameters in the Poisson Inverse Gaussian Model in Analysis of Infectious Count Data

    Symon Kamuyu Matonyo, Oscar Ngesa, Anthony Wanjoya

    Issue: Volume 6, Issue 6, December 2020
    Pages: 204-212
    Received: 13 November 2020
    Accepted: 21 November 2020
    Published: 30 November 2020
    Abstract: Statistical models create a basis for analysis of infectious disesase count. These data sets exhibit unique characteristics such as low counts, delayed reporting, underreporting amoung others. The tendency to model these counts using linear models with their simplicity is common with most research. Further, the assumption of a fixed dispersion in m... Show More
  • Inter-Arrival Time Modeling of Threshold Scores in Mathematics Among School Pupils; A Case of Acacia Crest School, Kenya

    Stella Mutahi, Thomas Mageto, Antony Ngunyi

    Issue: Volume 6, Issue 6, December 2020
    Pages: 213-219
    Received: 3 December 2020
    Accepted: 10 December 2020
    Published: 22 December 2020
    Abstract: Mathematical literacy is the ability to use numbers to help solve real-world problems. It focuses on pupils' ability to analyze, justify and communicate ideas effectively with regard to formulating, solving and interpreting Mathematical problems in a variety of forms and situations. The study modeled above threshold scores in mathematics among scho... Show More