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Identifying Changes in Mean, Seasonality, Persistence and Volatility for G7 and Euro Area Inflation

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  • Erdenebat Bataa
  • Denise R. Osborn
  • Marianne Sensier
  • Dick van Dijk

Abstract

This study examines the properties of monthly CPI inflation in G7 countries and the Euro area (aggregate) over the period 1973-2007 using a new iterative decomposition procedure that separates changes in mean, seasonal and dynamic components together with conditional volatility. We uncover mean and seasonality breaks for all countries and, even allowing for these, changes in persistence are indicated for all countries except Canada. Further, while volatility reductions are widespread in the mid- to early 1980s, Canada, France and the US all exhibit increased volatility from 1999 onwards. Of methodological interest, iteration is shown to provide more evidence of persistence breaks and fewer volatility breaks overall compared with the usual approach of sequentially examining changes in the properties of inflation, while application of linear seasonal adjustment also reduces evidence of persistence breaks. Although failure to allow for breaks in mean, seasonal or dynamic components affects conclusions about the existence and dates of volatility breaks, nevertheless, evidence remains of a volatility increase in some countries in 1999.

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  • Erdenebat Bataa & Denise R. Osborn & Marianne Sensier & Dick van Dijk, 2008. "Identifying Changes in Mean, Seasonality, Persistence and Volatility for G7 and Euro Area Inflation," Centre for Growth and Business Cycle Research Discussion Paper Series 109, Economics, The University of Manchester.
  • Handle: RePEc:man:cgbcrp:109
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    2. Andreou Elena & Pelloni Alessandra & Sensier Marianne, 2008. "Is volatility good for growth? Evidence from the G7," wp.comunite 0041, Department of Communication, University of Teramo.
    3. Steffen Henzel & Elisabeth Wieland, 2013. "Synchronization and Changes in International Inflation Uncertainty," CESifo Working Paper Series 4194, CESifo.
    4. Mohitosh Kejriwal & Xuewen Yu & Pierre Perron, 2020. "Bootstrap procedures for detecting multiple persistence shifts in heteroskedastic time series," Journal of Time Series Analysis, Wiley Blackwell, vol. 41(5), pages 676-690, September.
    5. Erdenebat Bataa & Denise R. Osborn & Marianne Sensier & Dick van Dijk, 2009. "Changes in International Business Cycle Affiliations," Economics Discussion Paper Series 0924, Economics, The University of Manchester.
    6. Jesper Roine & Daniel Waldenström, 2011. "Common Trends and Shocks to Top Incomes: A Structural Breaks Approach," The Review of Economics and Statistics, MIT Press, vol. 93(3), pages 832-846, August.
    7. James Yetman, 2017. "The evolution of inflation expectations in Canada and the US," Canadian Journal of Economics, Canadian Economics Association, vol. 50(3), pages 711-737, August.
    8. Erdenebat Bataa & Andrew Vivian & Mark Wohar, 2019. "Changes in the relationship between short‐term interest rate, inflation and growth: evidence from the UK, 1820–2014," Bulletin of Economic Research, Wiley Blackwell, vol. 71(4), pages 616-640, October.
    9. Scott W. Hegerty, 2020. "Structural breaks and regional inflation convergence for five new Euro members," Economic Change and Restructuring, Springer, vol. 53(2), pages 219-239, May.
    10. Bataa, Erdenebat, 2012. "Macroeconomic risks of Mongolia and ways to mitigate them," MPRA Paper 72386, University Library of Munich, Germany, revised 25 Jun 2013.
    11. Vasilios Plakandaras & Rangan Gupta & Mehmet Balcilar & Qiang Ji, 2021. "Evolving United States Stock Market Volatility: The Role of Conventional and Unconventional Monetary Policies," Working Papers 202113, University of Pretoria, Department of Economics.
    12. Bataa, Erdenebat & Izzeldin, Marwan & Osborn, Denise R., 2016. "Changes in the global oil market," Energy Economics, Elsevier, vol. 56(C), pages 161-176.
    13. Gantungalag Altansukh & Ralf Becker & George Bratsiotis & Denise R. Osborn, 2018. "Structural Breaks in International Inflation Linkages for OECD Countries," Centre for Growth and Business Cycle Research Discussion Paper Series 240, Economics, The University of Manchester.
    14. Hailemariam, Abebe & Smyth, Russell, 2019. "What drives volatility in natural gas prices?," Energy Economics, Elsevier, vol. 80(C), pages 731-742.
    15. OECD & Elena Rusticelli, 2014. "Rescuing the Phillips curve: Making use of long-term unemployment in the measurement of the NAIRU," OECD Journal: Economic Studies, OECD Publishing, vol. 2014(1), pages 109-127.
    16. Erdenebat Bataa & Denise R. Osborn & Marianne Sensier & Dick van Dijk, 2009. "Structural Breaks in the International Transmission of Inflation," Centre for Growth and Business Cycle Research Discussion Paper Series 119, Economics, The University of Manchester.
    17. Luetkepohl Helmut & Xu Fang, 2011. "Forecasting Annual Inflation with Seasonal Monthly Data: Using Levels versus Logs of the Underlying Price Index," Journal of Time Series Econometrics, De Gruyter, vol. 3(1), pages 1-23, February.
    18. Erdenebat Bataa, 2019. "Growth and Inflation Regimes in Greater Tumen Initiative Area," The Northeast Asian Economic Review, ERINA - Economic Research Institute for Northeast Asia, vol. 7(1), pages 15-29, November.
    19. Altansukh, Gantungalag & Becker, Ralf & Bratsiotis, George & Osborn, Denise R., 2017. "What is the globalisation of inflation?," Journal of Economic Dynamics and Control, Elsevier, vol. 74(C), pages 1-27.
    20. Bataa, Erdenebat, 2012. "The Composite Leading Indicator of Mongolia," MPRA Paper 72415, University Library of Munich, Germany.

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