The Distribution and Measurement of Inflation
AbstractMeasured inflation records many shocks that are not representative of the persistent component of inflation. Several methods are used to construct measures of core inflation which abstract from these unrepresentative shocks; this paper focuses on trimmed means. Analysis of Australian CPI component price changes shows they are widely dispersed. Further, they are not normally distributed; there is a large proportion of extreme price changes (the distribution is fat-tailed) and the distribution is usually positively skewed. With an understanding of the behaviour of price changes, trimmed means are then developed. It is found that trimmed means provide a better measure of trend, or core, inflation when a large proportion of the distribution is removed. As a consequence of the distribution’s systematic positive skew, slightly more than half of the trim should be taken from the left-hand tail to ensure that the trimmed mean records average inflation equal to that of the whole CPI.
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Bibliographic InfoPaper provided by Reserve Bank of Australia in its series RBA Research Discussion Papers with number rdp9810.
Date of creation: Sep 1998
Date of revision:
Find related papers by JEL classification:
- C82 - Mathematical and Quantitative Methods - - Data Collection and Data Estimation Methodology; Computer Programs - - - Methodology for Collecting, Estimating, and Organizing Macroeconomic Data
- E31 - Macroeconomics and Monetary Economics - - Prices, Business Fluctuations, and Cycles - - - Price Level; Inflation; Deflation
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- Bermingham, Colin, 2006. "How Useful is Core Inflation for Forecasting Headline Inflation?," Research Technical Papers 11/RT/06, Central Bank of Ireland.
- Gagik G. Aghajanyan, 2005. "Core inflation in a small transition country: choice of optimal measures," European Journal of Comparative Economics, Cattaneo University (LIUC), vol. 2(1), pages 83-110, June.
- Luc Aucremanne & Guy Brys & Mia Hubert & Peter J. Rousseeuw & Anja Struyf, 2002.
"Inflation, relative prices and nominal rigidities,"
Working Paper Research
20, National Bank of Belgium.
- Luc Aucremanne & Guy Brys & Peter J Rousseeuw & Anja Struyf & Mia Hubert, 2003. "Inflation, relative prices and nominal rigidities," BIS Papers chapters, in: Bank for International Settlements (ed.), Monetary policy in a changing environment, volume 19, pages 81-105 Bank for International Settlements.
- Santos, Edward P. & Mapa, Dennis S. & Glindro, Eloisa T., 2011.
"Estimating Inflation-at-Risk (IaR) using Extreme Value Theory (EVT),"
28266, University Library of Munich, Germany.
- Edward P. Santos & Dennis S. Mapa & Eloisa T. Glindro, 2010. "Estimating inflation-at-risk (IaR) using extreme value theory (EVT)," Philippine Review of Economics, University of the Philippines School of Economics and Philippine Economic Society, vol. 47(2), pages 21-40, December.
- Juan-Luis Vega & Mark A. Wynne, 2003.
"A First Assessment of Some Measures of Core Inflation for the Euro Area,"
German Economic Review,
Verein für Socialpolitik, vol. 4, pages 269-306, 08.
- Juan-Luis Vega & Mark A. Wynne, 2002. "A first assessment of some measures of core inflation for the euro area," Working Papers 02 05, Federal Reserve Bank of Dallas.
- Dospinescu, Andrei Silviu, 2010. "Measuring Core Inflation in Romania Using the Dobrescu Method – A Comparative Approach," Journal for Economic Forecasting, Institute for Economic Forecasting, vol. 0(2), pages 308-319, July.
- Meyler, Aidan, 1999.
"A statistical measure of core inflation,"
11362, University Library of Munich, Germany.
- Mick Silver, 2006. "Core Inflation Measures and Statistical Issues in Choosing Among Them," IMF Working Papers 06/97, International Monetary Fund.
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