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A Comparison of a General Linear Model and the Ratio Estimator

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  • Morteza Marzjarani

Abstract

In data analysis, selecting a proper statistical model is a challenging issue. Upon the selection, there are other important factors impacting the results. In this article, two statistical models, a General Linear Model (GLM) and the Ratio Estimator will be compared. Where applicable, some issues such as heteroscedasticity, outliers, etc. and the role they play in data analysis will be studied. For reducing the severity of heteroscedasticity, Weighted Least Square (WLS), Generalized Least Square (GLS), and Feasible Generalized Least Square (FGLS) will be deployed. Also, a revised version of FGLS is introduced. Since these issues are data dependent, shrimp effort data collected in the Gulf of Mexico for the years 2005 through 2018 will be used and it is shown that the revised FGLS reduces the impact of heteroscedasticity significantly compared to that of FGLS. The data sets will also be checked for the outliers and corrections are made (where applicable). It is concluded that these issues play a significant role in data analysis and must be taken seriously. Further, the two statistical models, that is, the GLM and the Ratio Estimator are compared.

Suggested Citation

  • Morteza Marzjarani, 2020. "A Comparison of a General Linear Model and the Ratio Estimator," International Journal of Statistics and Probability, Canadian Center of Science and Education, vol. 9(3), pages 1-54, May.
    • Handle: RePEc:ibn:ijspjl:v:9:y:2020:i:3:p:54
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    Cited by:

    1. Hasan, Mohammad Maruf & Hasan, Md Enamul & Ghosh, Tusher, 2024. "Transforming developing economies by shifting paradigms beyond natural resources. The fintech and social dynamics for sustainable mineral policy," Resources Policy, Elsevier, vol. 94(C).

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    JEL classification:

    • R00 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - General - - - General
    • Z0 - Other Special Topics - - General

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