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The Role of Seasonality and Monetary Policy in Inflation Forecasting

  • Francis Y. Kumah
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    Adequate modeling of the seasonal structure of consumer prices is essential for inflation forecasting. This paper suggests a new econometric approach for jointly determining inflation forecasts and monetary policy stances, particularly where seasonal fluctuations of economic activity and prices are pronounced. In an application of the framework, the paper characterizes and investigates the stability of the seasonal pattern of consumer prices in the Kyrgyz Republic and estimates optimal money growth and implied exchange rate paths along with a jointly determined inflation forecast. The approach uses two broad specifications of an augmented error-correction model-with and without seasonal components. Findings from the paper confirm empirical superiority (in terms of information content and contributions to policymaking) of augmented error-correction models of inflation over single-equation, Box-Jenkins-type general autoregressive seasonal models. Simulations of the estimated errorcorrection models yield optimal monetary policy paths for achieving inflation targets and demonstrate the empirical significance of seasonality and monetary policy in inflation forecasting.

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    Paper provided by International Monetary Fund in its series IMF Working Papers with number 06/175.

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    Length: 27
    Date of creation: 01 Jul 2006
    Date of revision:
    Handle: RePEc:imf:imfwpa:06/175
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    1. Armine Khachatryan & David A. Grigorian & Grigor Sargsyan, 2004. "Exchange Rate, Money, and Wages; What is Driving Prices in Armenia?," IMF Working Papers 04/229, International Monetary Fund.
    2. Hylleberg, S. & Engle, R.F. & Granger, C.W.J. & Yoo, B.S., 1988. "Seasonal, Integration And Cointegration," Papers 6-88-2, Pennsylvania State - Department of Economics.
    3. Kwiatkowski, Denis & Phillips, Peter C. B. & Schmidt, Peter & Shin, Yongcheol, 1992. "Testing the null hypothesis of stationarity against the alternative of a unit root : How sure are we that economic time series have a unit root?," Journal of Econometrics, Elsevier, vol. 54(1-3), pages 159-178.
    4. Rodolphe Blavy, 2004. "Inflation and Monetary Pass-Through in Guinea," IMF Working Papers 04/223, International Monetary Fund.
    5. Laura Papi & G. C. Lim, 1997. "An Econometric Analysis of the Determinants of Inflation in Turkey," IMF Working Papers 97/170, International Monetary Fund.
    6. Gordon de Brouwer & Neil R. Ericsson, 1995. "Modelling Inflation in Australia," RBA Research Discussion Papers rdp9510, Reserve Bank of Australia.
    7. Canova, Fabio & Hansen, Bruce E, 1995. "Are Seasonal Patterns Constant over Time? A Test for Seasonal Stability," Journal of Business & Economic Statistics, American Statistical Association, vol. 13(3), pages 237-52, July.
    8. Franses, Philip Hans, 1994. "A multivariate approach to modeling univariate seasonal time series," Journal of Econometrics, Elsevier, vol. 63(1), pages 133-151, July.
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