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Excluding items from personal consumption expenditures inflation

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  • Jim Dolmas

Abstract

Core inflation measures constructed by excluding particularly volatile items from the price index have a long history. The most common such measures are indexes excluding the prices of food and energy items. This paper attempts to shed some statistical light on the impact of excluding certain items from the personal consumption expenditures (PCE) price index. In particular, I am interested in the trade-off between reducing shortrun volatility (relative to the volatility of the headline index) and possibly distorting the measurement of inflation over longer horizons. Some of the questions this paper addresses are: Which items have the highest time series volatility? Among the items with high volatility, are there meaningful patterns in the distribution of volatility across high and low frequencies? Which items, by their exclusion, have the largest impact on longer-horizon measures of inflation? And which, by their exclusion, contribute the most to reducing high-frequency volatility in measured inflation? Excluding items that answer the last question yields a PCE index which compares favorably to PCE ex food and energy along several dimensions, while excluding only half as many items by expenditure weight.

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Bibliographic Info

Article provided by Federal Reserve Bank of Dallas in its journal Staff Papers.

Volume (Year): (2009)
Issue (Month): Jun ()
Pages:

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Handle: RePEc:fip:feddst:y:2009:i:jun:n:7

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Keywords: Inflation (Finance) ; Personal Consumption Expenditures Price Index ; Price indexes;

References

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  1. Michael F. Bryan & Stephen G. Cecchetti, 1993. "Measuring Core Inflation," NBER Working Papers 4303, National Bureau of Economic Research, Inc.
  2. Lawrence J. Christiano & Terry J. Fitzgerald, 1999. "The Band Pass Filter," NBER Working Papers 7257, National Bureau of Economic Research, Inc.
    • Lawrence J. Christiano & Terry J. Fitzgerald, 2003. "The Band Pass Filter," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 44(2), pages 435-465, 05.
  3. Robert Rich & Charles Steindel, 2007. "A comparison of measures of core inflation," Economic Policy Review, Federal Reserve Bank of New York, issue Dec, pages 19-38.
  4. Mick Silver, 2007. "Core Inflation: Measurement and Statistical Issues in Choosing Among Alternative Measures," IMF Staff Papers, Palgrave Macmillan, vol. 54(1), pages 163-190, May.
  5. Marianne Baxter & Robert G. King, 1995. "Measuring Business Cycles Approximate Band-Pass Filters for Economic Time Series," NBER Working Papers 5022, National Bureau of Economic Research, Inc.
  6. Jim Dolmas, 2005. "Trimmed mean PCE inflation," Working Papers 0506, Federal Reserve Bank of Dallas.
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Cited by:
  1. Alan K. Detmeister, 2012. "What should core inflation exclude?," Finance and Economics Discussion Series 2012-43, Board of Governors of the Federal Reserve System (U.S.).

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