Whose Inflation? A Characterization of the CPI Plutocratic Gap
Prais (1958) showed that the standard CPI computed by most statistical agencies can be interpreted as a weighted average of household price indexes, where the weight of each household is determined by its total expenditures. In this paper, we analytically decompose the difference between the standard CPI and a democratically weighted index (ie, the CPI plutocratic-democratic gap) as the product of expenditure inequality and the sample covariance between the elementary individual price indexes and a parameter which is a function of the expenditure elasticity of each good. This decomposition allows us to interpret variations in the size and sign of the plutocratic-democratic gap, and also to discuss issues pertaining to group indexes.
|Date of creation:||05 Oct 2001|
|Date of revision:||20 Oct 2001|
|Note:||Forthcoming in Oxford Economic Papers. Type of Document - PDF; prepared on MacOSX - CMac; to print on any printer; pages: 12; figures: none|
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- Frank Cowell, 2006.
LSE Research Online Documents on Economics
2686, London School of Economics and Political Science, LSE Library.
- Frank A Cowell, 2006. "Inequality: Measurement," STICERD - Distributional Analysis Research Programme Papers 86, Suntory and Toyota International Centres for Economics and Related Disciplines, LSE.
- Yitzhaki, Shlomo, 1996. "On Using Linear Regressions in Welfare Economics," Journal of Business & Economic Statistics, American Statistical Association, vol. 14(4), pages 478-86, October.
- Mario Izquierdo & Eduardo Ley & Javier Ruiz-Castillo, 2003. "The Plutocratic Gap in the CPI: Evidence from Spain," IMF Staff Papers, Palgrave Macmillan, vol. 50(1), pages 7.
- Angus Deaton, 1998. "Getting Prices Right: What Should Be Done?," Journal of Economic Perspectives, American Economic Association, vol. 12(1), pages 37-46, Winter.
- Jorgenson, Dale W & Slesnick, Daniel T, 1999. "Indexing Government Programs for Changes in the Cost of Living," Journal of Business & Economic Statistics, American Statistical Association, vol. 17(2), pages 170-81, April.
- Newbery, David M, 1995. "The Distributional Impact of Price Changes in Hungary and the United Kingdom," Economic Journal, Royal Economic Society, vol. 105(431), pages 847-63, July.
- Pollak, Robert A, 1980. "Group Cost-of-Living Indexes," American Economic Review, American Economic Association, vol. 70(2), pages 273-78, May.
- S. Nuri Erbas & Chera L. Sayers, 1998. "Is the United States CPI Biased Across Income and Age Groups?," IMF Working Papers 98/136, International Monetary Fund.
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