International Journal of Data Science and Analysis

Archive

Volume 5, Issue 2, April 2019

  • Power of Simulation Extrapolation in Correction of Covariates Measured with Errors

    Joseph Njuguna Karomo, Samuel Musili Mwalili, Anthony Wanjoya

    Issue: Volume 5, Issue 2, April 2019
    Pages: 13-17
    Received: 18 April 2019
    Accepted: 21 May 2019
    Published: 5 June 2019
    DOI: 10.11648/j.ijdsa.20190502.11
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    Abstract: Statistics is one of the most vibrant disciplines where research is inevitable. Most researches in statistics are concerned with the measurement of values of variables in order to make valid conclusions for decision making. Often, researchers do not use the exact values of the variables since it’s difficult to establish the exact value of variables... Show More
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  • Amendments of a Stochastic Restricted Principal Components Regression Estimator in the Linear Model

    Alaa Ahmed Abd Elmegaly

    Issue: Volume 5, Issue 2, April 2019
    Pages: 18-26
    Received: 1 January 2019
    Accepted: 3 June 2019
    Published: 12 June 2019
    DOI: 10.11648/j.ijdsa.20190502.12
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    Abstract: Principal component Analysis (PCA) is one of the popular methods used to solve the multicollinearity problem. Researchers in 2014 proposed an estimator to solve this problem in the linear model when there were stochastic linear restrictions on the regression coefficients. This estimator was called the stochastic restricted principal components (SRP... Show More
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