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Application of Principal Component Analysis and Hierarchical Regression Model on Kenya Macroeconomic Indicators

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  • Morris Kateeti Mbaluka
  • Dennis K. Muriithi
  • Gladys G. Njoroge

Abstract

The aim of this paper was to apply Principal Component Analysis (PCA) and hierarchical regression model on Kenyan Macroeconomic variables. The study adopted a mixed research design (descriptive and correlational research designs). The 18 macroeconomic variables data were extracted from Kenya National Bureau of Statistics and World Bank for the period 1970 to 2019. The R software was utilized to conduct all the data analysis. Principal Component Analysis was used to reduce the dimensionality of the data, where the original data set matrix was reduced to Eigenvectors and Eigenvalues. A hierarchical regression model was fitted on the extracted components, and R2 was used to determine whether the components were a good fit for predicting economic growth. The results from the study showed that the first component explained 73.605 % of the overall Variance and was highly correlated with 15 original variables. Additionally, the second principal component described approximately 10.03% of the total Variance, while the two variables had a higher positive loading into it. About 6.22% of the overall variance was explained by the third component, which was highly correlated with only one of the original variables. The first, second, and third models had F statistics of 2385.689, 1208.99, and 920.737, respectively, and each with a p-value of 0.0001

Suggested Citation

  • Morris Kateeti Mbaluka & Dennis K. Muriithi & Gladys G. Njoroge, 2022. "Application of Principal Component Analysis and Hierarchical Regression Model on Kenya Macroeconomic Indicators," European Journal of Mathematics and Statistics, European Open Science, vol. 3(1), pages 26-38, January.
    • Handle: RePEc:epw:ejmath:v:3:y:2022:i:1:id:14074
    DOI: 10.24018/ejmath.2022.3.1.74
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    References listed on IDEAS

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    1. Elizabeth W. Njoroge & Gladys G. Njoroge & Dennis K. Muriithi, 2014. "Evaluating Secondary School Examination Results: Application of Principal Component Analysis," Journal of Statistical and Econometric Methods, SCIENPRESS Ltd, vol. 3(2), pages 1-3.
    2. Esmaeili, Abdoulkarim & Shokoohi, Zainab, 2011. "Assessing the effect of oil price on world food prices: Application of principal component analysis," Energy Policy, Elsevier, vol. 39(2), pages 1022-1025, February.
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