American Journal of Theoretical and Applied Statistics

Volume 7, Issue 3, May 2018

  • On Local Linear Regression Estimation of Finite Population Totals in Model Based Surveys

    Conlet Biketi Kikechi, Richard Onyino Simwa, Ganesh Prasad Pokhariyal

    Issue: Volume 7, Issue 3, May 2018
    Pages: 92-101
    Received: 10 February 2018
    Accepted: 6 March 2018
    Published: 24 March 2018
    Abstract: In this paper, nonparametric regression is employed which provides an estimation of unknown finite population totals. A robust estimator of finite population totals in model based inference is constructed using the procedure of local linear regression. In particular, robustness properties of the proposed estimator are derived and a brief comparison... Show More
  • Bayesian Dynamic Linear Regression Analysis of Infant Growth by Weight

    Dereje Danbe Debeko, Ayele Taye Goshu

    Issue: Volume 7, Issue 3, May 2018
    Pages: 102-111
    Received: 5 March 2018
    Accepted: 19 March 2018
    Published: 2 April 2018
    Abstract: The most common anthropometric measurements used to assess physical growth patterns of infant from birth to one year period are body weight and length. Weight gain pattern is dynamic that could not be easily understood. The main objective of this study is to model the biological growth of infants by weight during the first year of their lives using... Show More
  • A Simple Stochastic Stomach Cancer Model with Application

    Josphat Mutwiri Ikiao, Nyongesa Kennedy, Robert Muriungi Gitunga

    Issue: Volume 7, Issue 3, May 2018
    Pages: 112-117
    Received: 3 December 2017
    Accepted: 12 December 2017
    Published: 11 April 2018
    Abstract: Survival analysis majors mainly on estimation of time taken before an event of interest takes place. Time taken before an event of interest takes place is a random process that takes shape overtime. Stochastic processes theory is therefore very crucial in analysis of survival data. The study employed markov chain theory in developing a simple stoch... Show More
  • Correspondence Analysis as a Strategy to Explore the Association between Different Categories of Crime in Yobe State, Nigeria

    Nicholas Pindar Dibal, Ibrahim Adamu Usman

    Issue: Volume 7, Issue 3, May 2018
    Pages: 118-125
    Received: 22 February 2018
    Accepted: 20 March 2018
    Published: 13 April 2018
    Abstract: With the rapid increase in population at both rural and urban areas and the increasing rate of unemployment, criminal activities in Nigeria have increased dramatically in dimension, frequency and sophistication. The study examine the relationships between crimes committed by criminals that were caught and reported to the police by individuals or ap... Show More
  • Investigating the Causes of Students’ Less Academic Performance in Engineering College of Debre Berhan University

    Hiluf Reda, Getahun Mulugeta

    Issue: Volume 7, Issue 3, May 2018
    Pages: 126-131
    Received: 22 March 2018
    Accepted: 8 April 2018
    Published: 28 April 2018
    Abstract: Student success is a critical issue facing higher education today. Schools, colleges and universities have no worth without students. Students are most essential asset for any educational institute. Less academic performance of students in universities especially in engineering colleges and its ripple effects are looming dangers for Ethiopia. The m... Show More