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Bayesian Multiple Linear Regression Model for GDP in Nepal

Received: 13 January 2023    Accepted: 6 February 2023    Published: 27 February 2023
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Abstract

Gross Domestic Product (GDP) known as the pulse of economy for any country depends on multiple factors like export-import, inflation rate and unemployment rate etc. Statistical assessment of GDP demands fresh concepts to explain GDP through its covariates in order to improve and strengthen estimation process. Descriptive analysis for the considered data set from world bank for GDP and covariates is presented through Heatmaps. Identification and relevance of possible set of covariates is done by Ordinary Least Square (OLS) regression followed by Step-wise regression. We propose an alternative statistical algorithm implemented as Bayesian Inference through Integrated Nested Laplace Approximation (INLA) which bridges the gap of accuracy in estimates as opposed to frequentist OLS regression for explaining GDP of country Nepal. Effect of changing prior parameters is assessed through Deviance Information Criterion (DIC). Different scenarios for prior distribution for regression parameters were analyzed to identify most suitable choice of parameter for normal distribution. The comparison of Bayesian and frequentist modelling results is done using several criteria such as Mean Square Error (MSE), Mean Absolute Deviation (MAD) and Mean Absolute Percent Error (MAPE). Bayesian estimation approach is a more efficient method for parametric estimation as compared to OLS classical method. GDP of Nepal was found to have strongest relationship with unemployment rate of Nepal as evident from both classical and Bayesian model.

Published in International Journal of Statistical Distributions and Applications (Volume 9, Issue 1)
DOI 10.11648/j.ijsd.20230901.12
Page(s) 9-23
Creative Commons

This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.

Copyright

Copyright © The Author(s), 2024. Published by Science Publishing Group

Keywords

Bayesian, GDP, Nepal, INLA, Regression, DIC

References
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Cite This Article
  • APA Style

    Ranjita Pandey, Dipendra Bahadur Chand, Himanshu Tolani. (2023). Bayesian Multiple Linear Regression Model for GDP in Nepal. International Journal of Statistical Distributions and Applications, 9(1), 9-23. https://doi.org/10.11648/j.ijsd.20230901.12

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    ACS Style

    Ranjita Pandey; Dipendra Bahadur Chand; Himanshu Tolani. Bayesian Multiple Linear Regression Model for GDP in Nepal. Int. J. Stat. Distrib. Appl. 2023, 9(1), 9-23. doi: 10.11648/j.ijsd.20230901.12

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    AMA Style

    Ranjita Pandey, Dipendra Bahadur Chand, Himanshu Tolani. Bayesian Multiple Linear Regression Model for GDP in Nepal. Int J Stat Distrib Appl. 2023;9(1):9-23. doi: 10.11648/j.ijsd.20230901.12

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  • @article{10.11648/j.ijsd.20230901.12,
      author = {Ranjita Pandey and Dipendra Bahadur Chand and Himanshu Tolani},
      title = {Bayesian Multiple Linear Regression Model for GDP in Nepal},
      journal = {International Journal of Statistical Distributions and Applications},
      volume = {9},
      number = {1},
      pages = {9-23},
      doi = {10.11648/j.ijsd.20230901.12},
      url = {https://doi.org/10.11648/j.ijsd.20230901.12},
      eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.ijsd.20230901.12},
      abstract = {Gross Domestic Product (GDP) known as the pulse of economy for any country depends on multiple factors like export-import, inflation rate and unemployment rate etc. Statistical assessment of GDP demands fresh concepts to explain GDP through its covariates in order to improve and strengthen estimation process. Descriptive analysis for the considered data set from world bank for GDP and covariates is presented through Heatmaps. Identification and relevance of possible set of covariates is done by Ordinary Least Square (OLS) regression followed by Step-wise regression. We propose an alternative statistical algorithm implemented as Bayesian Inference through Integrated Nested Laplace Approximation (INLA) which bridges the gap of accuracy in estimates as opposed to frequentist OLS regression for explaining GDP of country Nepal. Effect of changing prior parameters is assessed through Deviance Information Criterion (DIC). Different scenarios for prior distribution for regression parameters were analyzed to identify most suitable choice of parameter for normal distribution. The comparison of Bayesian and frequentist modelling results is done using several criteria such as Mean Square Error (MSE), Mean Absolute Deviation (MAD) and Mean Absolute Percent Error (MAPE). Bayesian estimation approach is a more efficient method for parametric estimation as compared to OLS classical method. GDP of Nepal was found to have strongest relationship with unemployment rate of Nepal as evident from both classical and Bayesian model.},
     year = {2023}
    }
    

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  • TY  - JOUR
    T1  - Bayesian Multiple Linear Regression Model for GDP in Nepal
    AU  - Ranjita Pandey
    AU  - Dipendra Bahadur Chand
    AU  - Himanshu Tolani
    Y1  - 2023/02/27
    PY  - 2023
    N1  - https://doi.org/10.11648/j.ijsd.20230901.12
    DO  - 10.11648/j.ijsd.20230901.12
    T2  - International Journal of Statistical Distributions and Applications
    JF  - International Journal of Statistical Distributions and Applications
    JO  - International Journal of Statistical Distributions and Applications
    SP  - 9
    EP  - 23
    PB  - Science Publishing Group
    SN  - 2472-3509
    UR  - https://doi.org/10.11648/j.ijsd.20230901.12
    AB  - Gross Domestic Product (GDP) known as the pulse of economy for any country depends on multiple factors like export-import, inflation rate and unemployment rate etc. Statistical assessment of GDP demands fresh concepts to explain GDP through its covariates in order to improve and strengthen estimation process. Descriptive analysis for the considered data set from world bank for GDP and covariates is presented through Heatmaps. Identification and relevance of possible set of covariates is done by Ordinary Least Square (OLS) regression followed by Step-wise regression. We propose an alternative statistical algorithm implemented as Bayesian Inference through Integrated Nested Laplace Approximation (INLA) which bridges the gap of accuracy in estimates as opposed to frequentist OLS regression for explaining GDP of country Nepal. Effect of changing prior parameters is assessed through Deviance Information Criterion (DIC). Different scenarios for prior distribution for regression parameters were analyzed to identify most suitable choice of parameter for normal distribution. The comparison of Bayesian and frequentist modelling results is done using several criteria such as Mean Square Error (MSE), Mean Absolute Deviation (MAD) and Mean Absolute Percent Error (MAPE). Bayesian estimation approach is a more efficient method for parametric estimation as compared to OLS classical method. GDP of Nepal was found to have strongest relationship with unemployment rate of Nepal as evident from both classical and Bayesian model.
    VL  - 9
    IS  - 1
    ER  - 

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Author Information
  • Department of Statistics, University of Delhi, New Delhi, India

  • Department of Statistics, University of Delhi, New Delhi, India

  • International Institute of Health Management and Research, New Delhi, India

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