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Measuring core inflation in India: An asymmetric trimmed mean approach

Author

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  • Naresh Kumar Sharma
  • Motilal Bicchal
  • Caroline Elliott

Abstract

The paper seeks to obtain an optimal asymmetric trimmed mean-based core inflation measure in the class of trimmed mean measures when the distribution of price changes is leptokurtic and skewed to the right for any given period. Several estimators based on asymmetric trimmed mean approach are constructed and estimates generated by use of these estimators are evaluated on the basis of certain established empirical criteria. The paper also provides the method of trimmed mean expression “in terms of percentile score.” This study uses 69 monthly price indices which are constituent components of Wholesale Price Index for the period, April 1994 to April 2009, with 1993–1994 as the base year. Results of the study indicate that an optimally trimmed estimator is found when we trim 29.5% from the left-hand tail and 20.5% from the right-hand tail of the distribution of price changes.

Suggested Citation

  • Naresh Kumar Sharma & Motilal Bicchal & Caroline Elliott, 2015. "Measuring core inflation in India: An asymmetric trimmed mean approach," Cogent Economics & Finance, Taylor & Francis Journals, vol. 3(1), pages 1014252-101, December.
    • Handle: RePEc:taf:oaefxx:v:3:y:2015:i:1:p:1014252
    DOI: 10.1080/23322039.2015.1014252
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    References listed on IDEAS

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    1. Hasan Bakhshi & Tony Yates, 1999. "To trim or not to trim? An application of a trimmmed mean inflation estimator to the United Kingdom," Bank of England working papers 97, Bank of England.
    2. Meyler, Aidan, 1999. "A statistical measure of core inflation," MPRA Paper 11362, University Library of Munich, Germany.
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    5. Newey, Whitney & West, Kenneth, 2014. "A simple, positive semi-definite, heteroscedasticity and autocorrelation consistent covariance matrix," Applied Econometrics, Russian Presidential Academy of National Economy and Public Administration (RANEPA), vol. 33(1), pages 125-132.
    6. Jim Dolmas, 2005. "Trimmed mean PCE inflation," Working Papers 0506, Federal Reserve Bank of Dallas.
    7. Kar, Sujata, 2009. "Statistical Tools as Measures of Core Inflation for India," Indian Economic Review, Department of Economics, Delhi School of Economics, vol. 44(2), pages 225-245.
    8. Das, Abhiman & John, Joice & Singh, Sanjay, 2009. "Measuring Core Inflation in India," Indian Economic Review, Department of Economics, Delhi School of Economics, vol. 44(2), pages 247-273.
    9. Mr. Scott Roger, 2000. "Relative Prices, Inflation and Core Inflation," IMF Working Papers 2000/058, International Monetary Fund.
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    Cited by:

    1. Priyanka Sahu, 2021. "A Study on the Dynamic Behaviour of Headline Versus Core Inflation: Evidence from India," Global Business Review, International Management Institute, vol. 22(6), pages 1574-1593, December.

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