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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

type="main" xml:lang="en"> We propose an iterative decomposition that tests and accounts for multiple structural breaks in the mean, seasonality, dynamics and conditional volatility, while also accounting for outliers. Considering each component separately within each iteration leads to greater flexibility compared with joint procedures. Monte Carlo analysis shows the procedure performs well. Applied to monthly CPI inflation in G7 countries and the Euro area, we uncover mean and seasonality breaks for all countries and, allowing for these, changes in persistence are generally also indicated. Further, volatility reductions are widespread in the early to mid 1980s, with some countries exhibiting increases from 1999 onwards.

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  • Erdenebat Bataa & Denise R. Osborn & Marianne Sensier & Dick van Dijk, 2014. "Identifying Changes in Mean, Seasonality, Persistence and Volatility for G7 and Euro Area Inflation," Oxford Bulletin of Economics and Statistics, Department of Economics, University of Oxford, vol. 76(3), pages 360-388, June.
    • Handle: RePEc:bla:obuest:v:76:y:2014:i:3:p:360-388
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    7. Bataa, Erdenebat & Izzeldin, Marwan & Osborn, Denise R., 2016. "Changes in the global oil market," Energy Economics, Elsevier, vol. 56(C), pages 161-176.
    8. 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.
    9. Hailemariam, Abebe & Smyth, Russell, 2019. "What drives volatility in natural gas prices?," Energy Economics, Elsevier, vol. 80(C), pages 731-742.
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    12. 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.
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    14. Bataa, Erdenebat, 2012. "The Composite Leading Indicator of Mongolia," MPRA Paper 72415, University Library of Munich, Germany.
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