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Price Indexes are a Problem for Testing PPP

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  • Wallace, Frederick

Abstract

This note illustrates a problem in purchasing power parity studies that test for stationarity of the real exchange rate. If the real rate series is constructed using price indexes then the real exchange rate may not be stationary even if the law of one price always holds for every good in the indexes.

Suggested Citation

  • Wallace, Frederick, 2015. "Price Indexes are a Problem for Testing PPP," MPRA Paper 65786, University Library of Munich, Germany.
    • Handle: RePEc:pra:mprapa:65786
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    References listed on IDEAS

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    1. Manuel Gómez-Zaldívar & Daniel Ventosa-Santaulària & Frederick Wallace, 2013. "The PPP hypothesis and structural breaks: the case of Mexico," Empirical Economics, Springer, vol. 45(3), pages 1351-1359, December.
    2. Alan M. Taylor, 2002. "A Century Of Purchasing-Power Parity," The Review of Economics and Statistics, MIT Press, vol. 84(1), pages 139-150, February.
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    More about this item

    Keywords

    PPP; real exchange rate; price indexes;
    All these keywords.

    JEL classification:

    • C22 - Mathematical and Quantitative Methods - - Single Equation Models; Single Variables - - - Time-Series Models; Dynamic Quantile Regressions; Dynamic Treatment Effect Models; Diffusion Processes
    • F31 - International Economics - - International Finance - - - Foreign Exchange

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