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An Empirical Test of Purchasing Power Parity in Selected African Countries - a Panel Data Approach

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  • Mkenda, Beatrice Kalinda

    (Department of Economics, School of Economics and Commercial Law, Göteborg University)

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    Abstract

    The paper tests whether the theory of Purchasing Power Parity holds in a selected sample of twenty African countries. The paper employs a panel unit root test to test whether the real exchange rates in the panel are mean reverting or not. The test employed is the Im et al (1997) test. Results show that the null of a unit root is rejected for the three real exchange rate indices, namely, the import-based and trade-weighted multilateral indices, and the bilateral indices, while for the export-based indices, the null hypothesis is not rejected. That is, Purchasing Power Parity is confirmed for the import-based and trade-weighted multilateral indices, and the bilateral indices, while it is rejected for the export-based multilateral indices. After performing the demeaning adjustment to account for cross-sectional dependence, our results show that the null hypothesis of a unit root is rejected for the import-based multilateral indices and the bilateral indices, while the null is not rejected for the trade-weighted multilateral indices. Purchasing Power Parity is therefore only confirmed for the import-based multilateral indices and bilateral indices, while it is rejected for the trade-weighted multilateral indices.

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    Bibliographic Info

    Paper provided by University of Gothenburg, Department of Economics in its series Working Papers in Economics with number 39.

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    Length: 44 pages
    Date of creation: 30 Apr 2001
    Date of revision:
    Handle: RePEc:hhs:gunwpe:0039

    Contact details of provider:
    Postal: Department of Economics, School of Business, Economics and Law, University of Gothenburg, Box 640, SE 405 30 GÖTEBORG, Sweden
    Phone: 031-773 10 00
    Web page: http://www.handels.gu.se/econ/
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    Related research

    Keywords: Purchasing Power Parity; Real Exchange Rate; Africa; Panel Data;

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    References

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    Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
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    2. Coakley, Jerry & Kulasi, Farida, 1997. "Cointegration of long span saving and investment," Economics Letters, Elsevier, vol. 54(1), pages 1-6, January.
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    8. Layton, Allan P. & Stark, Jonathan P., 1990. "Co-integration as an empirical test of purchasing power parity," Journal of Macroeconomics, Elsevier, vol. 12(1), pages 125-136.
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    19. Jorion, Philippe & Sweeney, Richard J., 1996. "Mean reversion in real exchange rates: evidence and implications for forecasting," Journal of International Money and Finance, Elsevier, vol. 15(4), pages 535-550, August.
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    21. Coakley, Jerry & Fuertes, Ana Maria, 1997. "New panel unit root tests of PPP," Economics Letters, Elsevier, vol. 57(1), pages 17-22, November.
    22. Jun Nagayasu, 1998. "Does the Long-Run PPP Hypothesis Hold for Africa? Evidence from Panel Co-Integration Study," IMF Working Papers 98/123, International Monetary Fund.
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    24. Oh, Keun-Yeob, 1996. "Purchasing power parity and unit root tests using panel data," Journal of International Money and Finance, Elsevier, vol. 15(3), pages 405-418, June.
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