American Journal of Theoretical and Applied Statistics

Volume 4, Issue 3, May 2015

  • Statistical Analysis of Determinants of Maternal Institutional Delivery Service Utilization in Ethiopia

    Kasahun Takele Geneti

    Issue: Volume 4, Issue 3, May 2015
    Pages: 71-77
    Received: 5 February 2015
    Accepted: 9 March 2015
    Published: 24 March 2015
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    Abstract: Utilization of maternal healthcare service is a proximate determinant of maternal morbidities and mortalities. On the way to improve maternal health care service, it is important to understand factors influencing maternal health care service utilization. The main purpose of this study is to determine statistically the correlates of maternal place o... Show More
  • Robust Linear Regression Using L1-Penalized MM-Estimation for High Dimensional Data

    Kamal Darwish, Ali Hakan Buyuklu

    Issue: Volume 4, Issue 3, May 2015
    Pages: 78-84
    Received: 10 March 2015
    Accepted: 24 March 2015
    Published: 30 March 2015
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    Abstract: Large datasets, where the number of predictors p is larger than the sample sizes n, have become very popular in recent years. These datasets pose great challenges for building a linear good prediction model. In addition, when dataset contains a fraction of outliers and other contaminations, linear regression becomes a difficult problem. Therefore, ... Show More
  • Comparative Study of Efficiency of Integer Programming, Simplex Method and Transportation Method in Linear Programming Problem (LPP)

    Ayansola Olufemi Aderemi, Oyenuga Iyabode Favour, Abimbola Latifat Adebisi

    Issue: Volume 4, Issue 3, May 2015
    Pages: 85-88
    Received: 8 March 2015
    Accepted: 24 March 2015
    Published: 31 March 2015
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    Abstract: In this paper, we present a Linear Programming Problem (LPP) to minimize the cost of transportation of NBC, PLC products from three distribution centres to ten depots. Three methods of analysis were considered namely: Integer Programming, simplex method and transportation method via computer packages. The result of the analysis revealed that, the c... Show More
  • Analysis of Tobacco Smoking Patterns in Kenya Using the Multinomial Logit Model

    Samwel N. Mwenda, Anthony Kibira Wanjoya, Anthony Gichuhi Waititu

    Issue: Volume 4, Issue 3, May 2015
    Pages: 89-98
    Received: 17 February 2015
    Accepted: 27 March 2015
    Published: 3 April 2015
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    Abstract: Objectives: The study aimed to determine the tobacco smoking patterns in Kenya. Methods: This research project used the Kenya GATS 2014 data, in which a sample of 5436 total people was interviewed. However since the research focussed on modelling tobacco smoking pattern in Kenya, data from only 4418 people was used for the analysis. Data from 1018 ... Show More
  • Application of a Bivariate Poisson Model in Devising a Profitable Betting Strategy of the Zimbabwe Premier Soccer League Match Results

    Desmond Mwembe, Lizwe Sibanda, Ndava Constantine Mupondo

    Issue: Volume 4, Issue 3, May 2015
    Pages: 99-111
    Received: 10 March 2015
    Accepted: 27 March 2015
    Published: 7 April 2015
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    Abstract: The study seeks to construct a profitable betting strategy for soccer results by developing a bivariate Poisson model for the analysis and computation of probabilities for football match outcomes. The dependence coefficient is estimated from Monte Carlo simulation and the scoring intensities are estimated from a log-linear model. The hypothesis tes... Show More
  • Statistical Trend Analysis of Residential Water Demand in Kisumu City, Kenya

    Robert Nyamao Nyabwanga, Edgar Ouko Otumba, Fredrick Onyango, Simeyo Otieno

    Issue: Volume 4, Issue 3, May 2015
    Pages: 112-117
    Received: 30 March 2015
    Accepted: 9 April 2015
    Published: 18 April 2015
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    Abstract: This study sought to analyse trend in the monthly water demand data series in Kisumu city at both seasonal and non-seasonal levels using the parametric method of Ordinary Least Squares (OLS) and non-parametric methods of Mann-Kendall tau and Sen's T test. Sen’s test was applied to validate the Mann Kendall trend test and to estimate the magnitude ... Show More
  • Entropy for Past Residual Life Time Distributions

    Arif Habib, Meshiel Alalyani

    Issue: Volume 4, Issue 3, May 2015
    Pages: 118-124
    Received: 27 February 2015
    Accepted: 16 March 2015
    Published: 21 April 2015
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    Abstract: As we are familiar that existence of life is uncertain. In the context of reliability and lifetime distributions, there are some measures such as the hazard rate function or the mean residual lifetime function that have been used to characterize or compare the aging process of a component. This definition deals with random variable truncated above ... Show More
  • Cross-Country Spillovers in East Africa: A Global Vector Autoregressive Analysis

    Daniel Njoora, Olusanya E. Olubusoye, Patrick Weke

    Issue: Volume 4, Issue 3, May 2015
    Pages: 125-137
    Received: 20 March 2015
    Accepted: 11 April 2015
    Published: 21 April 2015
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    Abstract: The recent financial crisis raises important issues about transmission of financial shocks across borders. This paper uses the global vector autoregressive model as developed in Dees, di Mauro, Pesaran and Smith (2007) to study cross-country interlinkages among East African countries. The paper uses trade weights to capture the importance of the fo... Show More
  • Analysis of Mean Absolute Deviation for Randomized Block Design under Laplace Distribution

    Elsayed A. H. Elamir

    Issue: Volume 4, Issue 3, May 2015
    Pages: 138-149
    Received: 2 April 2015
    Accepted: 11 April 2015
    Published: 21 April 2015
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    Abstract: Analysis of mean absolute deviation (ANOMAD) for randomized block design is derived where the total sum of absolute deviation (TSA) is partition into exact block sum of absolute deviation (BLSA), exact treatment sum of absolute deviation (TRSA) and within sum of absolute deviation (WSA). The exact partitions are derived by getting rid of the absolu... Show More
  • An Alternative Method of Estimation of SUR Model

    Shohel Rana, Mohammad Mastak Al Amin

    Issue: Volume 4, Issue 3, May 2015
    Pages: 150-155
    Received: 4 April 2015
    Accepted: 14 April 2015
    Published: 24 April 2015
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    Abstract: This paper proposed a transformed method of SUR model which provided unbiased estimation in case of two and three equations of high and low co-linearity for both small and large datasets. The generalized least squares (GLS) method for estimation of seemingly unrelated regression (SUR) model proposed by Zellner (1962), Srivastava and Giles (1987),pr... Show More
  • Application of Logistic Regression in Determining the Factors Influencing the use of Modern Contraceptive among married women in Ethiopia

    Kebede Abu Aragaw

    Issue: Volume 4, Issue 3, May 2015
    Pages: 156-162
    Received: 20 March 2015
    Accepted: 1 April 2015
    Published: 5 May 2015
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    Abstract: The aim of the study was to investigate the determinants of use of modern contraceptive among married women in Ethiopia. Our study is based on the data taken from a nationally representative survey EDHS of 2011. The sample includes 9,438 married women aged 15-49 years. Cross tabulations were carried out at the bivariate level to assess the associat... Show More
  • Mathematical Modeling of Optimum 3 Step Stress Accelerated Life Testing for Generalized Pareto Distribution

    Sadia Anwar, Sana Shahab, Arif Ul Islam

    Issue: Volume 4, Issue 3, May 2015
    Pages: 163-169
    Received: 17 April 2015
    Accepted: 28 April 2015
    Published: 11 May 2015
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    Abstract: This article contains the optimum 3 step stress accelerated life test under cumulative exposure model. The lifetimes of test units are assumed to follow a generalized Pareto distribution. The scale parameter of the used failure time distribution at the constant stress level is assumed to have a log-linear and quadratic relationship with the stress.... Show More
  • Multinomial Logit Modeling of Factors Associated With Multiple Sexual Partners from the Kenya Aids Indicator Survey 2007

    Beryl Ang’iro, Samuel Mwalili, Josphat Kinyanjui

    Issue: Volume 4, Issue 3, May 2015
    Pages: 170-177
    Received: 4 March 2015
    Accepted: 19 March 2015
    Published: 16 May 2015
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    Abstract: The number of lifetime sex partners of an individual has an important effect on Human Immunodeficiency Virus (HIV) status of an individual; hence modeling multiple sexual partnerships is an essential component of any analysis of HIV outcome. Multiple sexual partnerships are associated with greater risk of HIV, Sexually Transmitted infections (STIs)... Show More
  • Modeling Road Traffic Accident Injuries in Nairobi County: Model Comparison Approach

    Julius Nyerere Odhiambo, Anthony Kibira Wanjoya, Anthony Gichuhi Waititu

    Issue: Volume 4, Issue 3, May 2015
    Pages: 178-184
    Received: 5 May 2015
    Accepted: 13 May 2015
    Published: 27 May 2015
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    Abstract: Road Traffic Accident (RTA) injuries, is a neglected cause of death and disability in Nairobi County. Nairobi County has the highest number of injury rates in Kenya, notably in the active age group of (15-29) years that constitutes approximately 40% of its population. This signifies the importance of properly analyzing traffic accident data and pre... Show More
  • Modeling Panel Data: Comparison of GLS Estimation and Robust Covariance Matrix Estimation

    Victor Muthama Musau, Anthony Gichuhi Waititu, Anthony Kibira Wanjoya

    Issue: Volume 4, Issue 3, May 2015
    Pages: 185-191
    Received: 8 May 2015
    Accepted: 17 May 2015
    Published: 28 May 2015
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    Abstract: The proliferation of panel studies which has been greatly motivated by the availability of data and greater capacity for modeling the complexity of human behavior than a single cross-section or time series data has led to the rise of challenging methodologies for estimating the data sets. Much controversy on these methodologies is the under-estimat... Show More
  • Comparison of Methods of Handling Missing Data: A Case Study of KDHS 2010 Data

    Shelmith Nyagathiri Kariuki, Anthony Waititu Gichuhi, Anthony Kibira Wanjoya

    Issue: Volume 4, Issue 3, May 2015
    Pages: 192-200
    Received: 8 May 2015
    Accepted: 18 May 2015
    Published: 29 May 2015
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    Abstract: Missing data poses a major threat to observational and experimental studies. Analysis of data having ignored missingness results to estimates that are inefficient and unbiased. Various researches have been done to determine the best methods of dealing with missing data. The analysis used in these researches involved simulating missing data from com... Show More
  • A Design Unbiased Variance Estimator of the Systematic Sample Means

    Festus A. Were, George Orwa, Romanus Odhiambo

    Issue: Volume 4, Issue 3, May 2015
    Pages: 201-210
    Received: 11 May 2015
    Accepted: 18 May 2015
    Published: 30 May 2015
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    Abstract: Systematic sampling is normally used in surveys of finite populations because of its appealing simplicity and efficiency. When properly applied, it can reflect stratification in the population and thus can be more precise than SRS. In systematic sampling technique, the sampling units are evenly spread over the whole population. This sampling scheme... Show More
  • Research on Beijing Total Logistics Demand Prediction Based on Grey Prediction Model

    Jie Zhu, Hong Zhang, Li Zhou

    Issue: Volume 4, Issue 3, May 2015
    Pages: 211-222
    Received: 23 April 2015
    Accepted: 6 May 2015
    Published: 1 June 2015
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    Abstract: As an important part of regional logistics demand forecasting in logistics system planning, in order to develop regional logistics development policy, planning and construction of logistics infrastructure, provide the basis for the necessary for analysis of the logistics market development trend. Due to the development of China's logistics industry... Show More