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The Sri Lankan Rupee and Purchasing Power Parity during the Current Floating Period

Author

Listed:
  • Guneratne Banda Wickremasinghe

    (Monash University)

Abstract

This paper examines the empirical validity of purchasing power parity (PPP) hypothesis in a Sri Lankan context using exchange rates for six foreign currencies during the period January 1986 to November 2000. Both graphical and econometric methods are used in the analysis. Graphical analysis indicates that the spot exchange rates for the currencies except for the Indian rupee follow the respective PPP exchange rates closely during certain time periods only and real exchange rates are non-stationary thus violating a necessary condition for the PPP to hold. The results of econometric methods are also consistent with those of the graphical methods. In addition, the symmetry and proportionality hypotheses implied by the PPP were rejected. These results refute the validity of PPP hypothesis to Sri Lanka. While these results have implications for policy makers, they may be corroborated using other econometric techniques such as cointegration and error-correction models and nonlinear models.

Suggested Citation

  • Guneratne Banda Wickremasinghe, 2004. "The Sri Lankan Rupee and Purchasing Power Parity during the Current Floating Period," International Trade 0406005, University Library of Munich, Germany.
    • Handle: RePEc:wpa:wuwpit:0406005
    Note: Type of Document - pdf; pages: 26
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    References listed on IDEAS

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    JEL classification:

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

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