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The Ratio Model and its Application: A Revisit

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  • Zhibai Zhang
  • Xinyue Zou

Abstract

In this paper, the ratio model, a simple currency valuation model proposed by Zhang (2012, International Research Journal of Finance and Economics, issue 97, pp. 55–59), is revisited. We use both the ratio and purchasing power parity (PPP) models to value the bilateral real exchange rates (RERs) of five Asian industrial countries and areas, namely, Japan, Korea, Taiwan, Hong Kong, and Singapore, against the United States. In the early 1950s to 2009, the RER misalignments of four new industrial countries and areas from the ratio model converged, but those from the PPP model did not, implying the competitiveness of the ratio model against the PPP model both in currency valuation and as an RER anchor. Based on the two models, from 2010 to 2011, the yen was shown to be overvalued by approximately 30%, whereas the Singapore dollar was undervalued by approximately 20%. However, the conclusions on the other three RERs were not consistent.

Suggested Citation

  • Zhibai Zhang & Xinyue Zou, 2013. "The Ratio Model and its Application: A Revisit," Journal of Applied Finance & Banking, SCIENPRESS Ltd, vol. 3(6), pages 1-4.
    • Handle: RePEc:spt:apfiba:v:3:y:2013:i:6:f:3_6_4
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    Cited by:

    1. Zhang, Zhibai & Chen, Langnan, 2014. "A new assessment of the Chinese RMB exchange rate," China Economic Review, Elsevier, vol. 30(C), pages 113-122.
    2. Luke Lin & Chun I. Lee, 2016. "Central Bank Intervention, Exchange Rate Regime and the Purchasing Power Parity," The World Economy, Wiley Blackwell, vol. 39(8), pages 1256-1274, August.

    More about this item

    JEL classification:

    • F41 - International Economics - - Macroeconomic Aspects of International Trade and Finance - - - Open Economy Macroeconomics
    • F31 - International Economics - - International Finance - - - Foreign Exchange

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