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A note on testing for purchasing power parity

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  • Heinen, Florian

Abstract

We examine the asymptotic behavior of unit root tests against nonlinear alternatives of the exponential smooth transition type if the data is erroneously nonlinearly transformed. We show analytically and by a Monte Carlo study that the probability of rejecting the correct null of a random walk depends heavily on the type of data transformation.

Suggested Citation

  • Heinen, Florian, 2011. "A note on testing for purchasing power parity," Hannover Economic Papers (HEP) dp-471, Leibniz Universität Hannover, Wirtschaftswissenschaftliche Fakultät.
  • Handle: RePEc:han:dpaper:dp-471
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    File URL: http://diskussionspapiere.wiwi.uni-hannover.de/pdf_bib/dp-471.pdf
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    References listed on IDEAS

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    1. de Jong, Robert M., 2004. "Addendum To," Econometric Theory, Cambridge University Press, vol. 20(03), pages 627-635, June.
    2. de Jong, Robert M. & Schmidt, Peter, 2002. "Spurious logarithms and the KPSS statistic," Economics Letters, Elsevier, vol. 76(3), pages 383-391, August.
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    More about this item

    Keywords

    Unit roots; Misspecification; Nonlinear data transformation; Purchasing Power Parity;

    JEL classification:

    • C12 - Mathematical and Quantitative Methods - - Econometric and Statistical Methods and Methodology: General - - - Hypothesis Testing: General
    • 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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