Archive:: American Journal of Theoretical and Applied Statistics:: Science Publishing Group

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

DOI: 10.11648/j.ajtas.20180703.11

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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

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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

DOI: 10.11648/j.ajtas.20180703.12

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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

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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

DOI: 10.11648/j.ajtas.20180703.13

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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

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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

DOI: 10.11648/j.ajtas.20180703.14

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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

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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

DOI: 10.11648/j.ajtas.20180703.15

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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

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