Science Journal of Applied Mathematics and Statistics

Volume 3, Issue 6, December 2015

  • Students Perceptions Towards Industrial Attachment in Kumasi: An Ordinal logistic Approach

    Maxwell B. Asare, Robert K. Antwiadjei-Manu, Kofi A. Ababio

    Issue: Volume 3, Issue 6, December 2015
    Pages: 275-280
    Received: 1 September 2015
    Accepted: 19 September 2015
    Published: 16 October 2015
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    Abstract: The association of four ordered categories of student’s perceptions towards challenges in industrial attachment program with socio-demographic characteristics is researched in this study. The ordered nature of responses motivated the use of ordinal logistic model. With the aid of questionnaire, data were gathered from students who were serving in v... Show More
  • Imputation of Missing Values for BL (P,0,P,P) Models with Normally Distributed Innovations

    Poti Abaja Owili

    Issue: Volume 3, Issue 6, December 2015
    Pages: 234-242
    Received: 4 October 2015
    Accepted: 21 October 2015
    Published: 30 October 2015
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    Abstract: This study derived estimates of missing values for bilinear time series models BL (p, 0, p, p) with normally distributed innovations by minimizing the h-steps-ahead dispersion error. For comparison purposes, missing value estimates based on artificial neural network (ANN) and exponential smoothing (EXP) techniques were also obtained. Simulated data... Show More
  • Incorporating Survey Weights into Binary and Multinomial Logistic Regression Models

    Kennedy Sakaya Barasa, Chris Muchwanju

    Issue: Volume 3, Issue 6, December 2015
    Pages: 243-249
    Received: 29 July 2015
    Accepted: 4 August 2015
    Published: 19 November 2015
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    Abstract: Since sampling weights are not simply equal to the reciprocal of selection probabilities its always challenging to incorporate survey weights into likelihood-based analysis. These weights are always adjusted for various characteristics. In cases where logistic regression model is used to predict categorical outcomes with survey data, the sampling w... Show More
  • Statistical Analysis of Road Traffic Car Accident in Dire Dawa Administrative City, Eastern Ethiopia

    Belachew Melese Hunde, Zeleke Dutamo Aged

    Issue: Volume 3, Issue 6, December 2015
    Pages: 250-256
    Received: 13 September 2015
    Accepted: 29 September 2015
    Published: 3 December 2015
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    Abstract: Road traffic accidents (RTAs) have turned out to be a huge global public health and development problem. Dire Dawa City one of the federal states in North East Ethiopia has a high rate of accidents and deaths in relation to number of vehicles on the road. Realizing the need to establish baseline information on RTAs, the present study was conducted ... Show More
  • Holt-Winters Forecasting Method That Takes into Account the Effect of Eid

    Bustami, Hadi Irawansyah, M. D. H. Gamal

    Issue: Volume 3, Issue 6, December 2015
    Pages: 257-262
    Received: 13 November 2015
    Accepted: 25 November 2015
    Published: 14 December 2015
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    Abstract: This paper discusses the Holt-Winters forecasting method that takes into account the effect of Eid. This method is used to predict the total domestic passengers departing in five major ports in Indonesia. Then a comparison is carried out between Holt-Winters method and Holt-Winters method that takes into account the effect of Eid. The comparison is... Show More
  • Application of Latin Hypercube Sampling Based Kriging Surrogate Models in Reliability Assessment

    Liu Chu, Eduardo Souza De Cursi, Abdelkhalak El Hami, Mohamed Eid

    Issue: Volume 3, Issue 6, December 2015
    Pages: 263-274
    Received: 28 November 2015
    Accepted: 5 December 2015
    Published: 22 December 2015
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    Abstract: Reliability assessment is one of the necessary and critical parts in structural design under uncertainties. The methods for structural reliability assessment aim at evaluating the probability of limit state by considering the fluctuation of acting loads, variation of structural component or system, and complexity of operating environment. Latin Hyp... Show More
  • An Efficient Class of Exponential Chain Ratio Type Estimator for Finite Population Mean in Double Sampling

    Diganta Kalita

    Issue: Volume 3, Issue 6, December 2015
    Pages: 281-287
    Received: 12 October 2015
    Accepted: 4 November 2015
    Published: 25 December 2015
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    Abstract: This paper presents a class of exponential chain ratio type estimator in double sampling for estimating finite population mean of the study variable, when the information on another additional auxiliary variable is known along with the main auxiliary variable. The property of proposed class of estimator has been studied. Comparison has been made wi... Show More
  • Two Factor Data Analysis with Unequal Cell Frequencies and Interaction

    Chinwendu Alice Uzuke, Ikewelugo Cyprian Anene Oyeka, Happiness Onyebuchi Obiora-Ilouno

    Issue: Volume 3, Issue 6, December 2015
    Pages: 288-292
    Received: 18 November 2015
    Accepted: 5 December 2015
    Published: 25 December 2015
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    Abstract: This paper proposes a non parametric method for two factor data analysis with unequal cell frequencies and interaction. Chi-square test statistic was developed for testing the null hypothesis of no treatment effect and interaction between factor A and factor B. The proposed methods are illustrated with some data and compared with the usual unweight... Show More
  • The Optimal Estimation of Lasso

    Huiyi Xia

    Issue: Volume 3, Issue 6, December 2015
    Pages: 293-297
    Received: 30 December 2015
    Published: 30 December 2015
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    Abstract: The estimation of lasso is important problem of high dimensional data; the optimal estimation’s formula of lasso is unsolved riddle of high dimensional data. In order to solve this problem, we give the structure of lasso estimation by using mathematical method in the orthogonal design. The optimal estimation’s formula of lasso is solved in the orth... Show More
  • Effect of Vocabulary Building Instruction on Technical School Students’ Achievement in Algebraic Word Problems in Benue State, Nigeria

    Clement Onwu Iji, Godwin Aôndohemba Fiase, Odihi Adikwu

    Issue: Volume 3, Issue 6, December 2015
    Pages: 298-305
    Received: 13 December 2015
    Accepted: 20 December 2015
    Published: 30 December 2015
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    Abstract: Mathematics is used in everyday life, be it social, economic, arts, science or technology. However, empirical evidence shows that students achieve poorly in the subject at School Certificate level especially in the algebraic expression. Research findings have indicated that this low achievement may be attributed to inappropriate pedagogies used by ... Show More