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Analysis of the dynamic of inflation process in Nigeria: An application of GARCH modelling

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  • Ekpeyong, Paul

Abstract

This study investigates the dynamics of inflation volatility in Nigeria, with a specific focus on the Food Consumer Price Index (CPI), Core CPI, and Headline CPI. The analysis utilizes the Autoregressive Conditional Heteroskedasticity (ARCH) and Generalized Autoregressive Conditional Heteroskedasticity (GARCH) models to capture time-varying volatility in the inflation rates. The study covers the period from January 1995 to December 2022, employing monthly data sourced from the Central Bank of Nigeria database. The results indicate that all three inflation series display time-varying volatility, signifying varying degrees of fluctuations and uncertainties in price movements over different periods. Furthermore, the presence of ARCH and GARCH effects in the residuals of the volatility models confirms the dynamic nature of inflation volatility. The study identifies significant structural breaks in the volatility of Food CPI during the years 2000, 2008, and 2018, emphasizing the importance of understanding the drivers of inflation volatility. External events and policy changes during these periods impacted food prices and led to shifts in volatility. Policy recommendations are made to address the challenges posed by inflation volatility in Nigeria. These include implementing price stability measures, enhancing food security, strengthening monetary policy, promoting data transparency and analysis, and undertaking fiscal reforms. The findings of this study contribute to a deeper understanding of inflation volatility in Nigeria and provide valuable insights for policymakers in formulating effective strategies to manage inflation and achieve macroeconomic stability. The study highlights the importance of monitoring inflation dynamics and implementing timely policies to ensure sustained economic growth and development in the country.

Suggested Citation

  • Ekpeyong, Paul, 2023. "Analysis of the dynamic of inflation process in Nigeria: An application of GARCH modelling," MPRA Paper 118128, University Library of Munich, Germany.
    • Handle: RePEc:pra:mprapa:118128
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    References listed on IDEAS

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    1. Brooks,Chris, 2008. "RATS Handbook to Accompany Introductory Econometrics for Finance," Cambridge Books, Cambridge University Press, number 9780521896955, January.
    2. Ding, Zhuanxin & Granger, Clive W. J. & Engle, Robert F., 1993. "A long memory property of stock market returns and a new model," Journal of Empirical Finance, Elsevier, vol. 1(1), pages 83-106, June.
    3. Ball, Laurence, 1992. "Why does high inflation raise inflation uncertainty?," Journal of Monetary Economics, Elsevier, vol. 29(3), pages 371-388, June.
    4. Anastassios A. Drakos & Georgios P. Kouretas & Leonidas P. Zarangas, 2010. "Forecasting financial volatility of the Athens stock exchange daily returns: an application of the asymmetric normal mixture GARCH model," International Journal of Finance & Economics, John Wiley & Sons, Ltd., vol. 15(4), pages 331-350.
    5. Brunner, Allan D & Hess, Gregory D, 1993. "Are Higher Levels of Inflation Less Predictable? A State-Dependent Conditional Heteroscedasticity Approach," Journal of Business & Economic Statistics, American Statistical Association, vol. 11(2), pages 187-197, April.
    6. William Miles & Samuel Schreyer, 2009. "Inflation Costs, Uncertainty Costs And Emerging Markets," Journal of Economic Development, Chung-Ang Unviersity, Department of Economics, vol. 34(2), pages 169-183, December.
    7. Caporale, Tony & McKiernan, Barbara, 1997. "High and variable inflation: Further evidence on the Friedman hypothesis," Economics Letters, Elsevier, vol. 54(1), pages 65-68, January.
    8. Bollerslev, Tim, 1986. "Generalized autoregressive conditional heteroskedasticity," Journal of Econometrics, Elsevier, vol. 31(3), pages 307-327, April.
    9. Grier, Kevin B. & Perry, Mark J., 1998. "On inflation and inflation uncertainty in the G7 countries," Journal of International Money and Finance, Elsevier, vol. 17(4), pages 671-689, August.
    10. Elder, John, 2004. "Another Perspective on the Effects of Inflation Uncertainty," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 36(5), pages 911-928, October.
    11. Engle, Robert F, 1982. "Autoregressive Conditional Heteroscedasticity with Estimates of the Variance of United Kingdom Inflation," Econometrica, Econometric Society, vol. 50(4), pages 987-1007, July.
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    JEL classification:

    • E6 - Macroeconomics and Monetary Economics - - Macroeconomic Policy, Macroeconomic Aspects of Public Finance, and General Outlook
    • E61 - Macroeconomics and Monetary Economics - - Macroeconomic Policy, Macroeconomic Aspects of Public Finance, and General Outlook - - - Policy Objectives; Policy Designs and Consistency; Policy Coordination
    • E63 - Macroeconomics and Monetary Economics - - Macroeconomic Policy, Macroeconomic Aspects of Public Finance, and General Outlook - - - Comparative or Joint Analysis of Fiscal and Monetary Policy; Stabilization; Treasury Policy

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