Science Journal of Applied Mathematics and Statistics

Volume 9, Issue 6, December 2021

  • Analysis of Migration Trends in Zimbabwe Using Mann-Kendall and Sen’s Slope Tests

    Romeo Mawonike, Musara Chipumuro, Tendai Makoni, Talent David Murwendo

    Issue: Volume 9, Issue 6, December 2021
    Pages: 133-140
    Received: 20 November 2020
    Accepted: 22 June 2021
    Published: 2 December 2021
    Abstract: The movement of people into and out of the Zimbabwean borders has become a topical issue in every sector of the country. The main devastating movement is when a lot of skilled professionals leave the country to other countries in search of greener pastures without ploughing back home and left the country of origin with few or no skilled personnel t... Show More
  • Effect of Multicollinearity on Variable Selection in Multiple Regression

    Harrison Oghenekevwe Etaga, Roseline Chibotu Ndubisi, Ngonadi Lilian Oluebube

    Issue: Volume 9, Issue 6, December 2021
    Pages: 141-153
    Received: 25 October 2021
    Accepted: 17 November 2021
    Published: 9 December 2021
    Abstract: When Multicollinearity exists in a data set, the data is considered deficient. Multicollinearity is frequently encountered in observational studies. It creates difficulties when building regression models. It is a phenomenon whereby two or more explanatory variable in a multiple regression model are highly correlated. Variable selection is an impor... Show More