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Does PPP hold for Big Mac price or consumer price index? Evidence from panel cointegration

Author

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  • Chien-Fu Chen

    (Department of Economics, National Dong Hwa University, Taiwan)

  • Chien-an Andy Wang

    (Department of Banking and Finance, National Chi-Nan University, Taiwan)

  • Chung-Hua Shen

    (Department of Money and Banking, National Chengchi University, Taiwan)

Abstract

This paper examines the validity of purchasing power parity (PPP) using CPI and Big Mac prices. The benchmark model, i.e., the OLS method, which does not take nonstationarity into account, rejects the hypothesis of PPP regardless of prices used. We next use the panel cointegration method to consider the nonstationary nature of variables. Estimated results for CPI are mixed. The PPP is rejected when the nominal exchange rate is employed as the dependent variable but is not rejected when the price ratio is used as the dependent variable. By contrast, the PPP is overwhelmingly not rejected when the Big Mac price is used. Last, we remove the production bias and re-examine the same issue by using panel cointegration. The PPP is again decisively rejected when CPI price is used but not for Big Mac price. Accordingly, Big Mac price is more supportive to the validity of PPP than CPI price.

Suggested Citation

  • Chien-Fu Chen & Chien-an Andy Wang & Chung-Hua Shen, 2007. "Does PPP hold for Big Mac price or consumer price index? Evidence from panel cointegration," Economics Bulletin, AccessEcon, vol. 6(16), pages 1-15.
    • Handle: RePEc:ebl:ecbull:eb-07f30007
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    References listed on IDEAS

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    2. Clements, Kenneth W. & Lan, Yihui, 2010. "A new approach to forecasting exchange rates," Journal of International Money and Finance, Elsevier, vol. 29(7), pages 1424-1437, November.
    3. Hai Long Vo & Duc Hong Vo, 2023. "The purchasing power parity and exchange‐rate economics half a century on," Journal of Economic Surveys, Wiley Blackwell, vol. 37(2), pages 446-479, April.
    4. Amita Majumder & Ranjan Ray, 2020. "National and subnational purchasing power parity: a review," DECISION: Official Journal of the Indian Institute of Management Calcutta, Springer;Indian Institute of Management Calcutta, vol. 47(2), pages 103-124, June.
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    7. Duc Hong Vo & Anh The Vo, 2017. "Currency evaluation using a big mac index for Thailand – lessons for Vietnam," Economics Bulletin, AccessEcon, vol. 37(2), pages 999-1011.

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    JEL classification:

    • F3 - International Economics - - International Finance

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