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Are Pound and Euro the Same Currency? - Updated

  • Matsushita, Raul
  • Gleria, Iram
  • Figueiredo, Annibal
  • Da Silva, Sergio

Based on long range dependence, some analysts claim that the exchange rate time series of the pound sterling and of an artificially extended euro have been locked together for years despite daily changes [1, 9]. They conclude that pound and euro are in practice the same currency. We assess the long range dependence over time through Hurst exponents of pound-dollar and extended euro-dollar exchange rates employing three alternative techniques, namely rescaled range analysis, detrended fluctuation analysis, and detrended moving average. We find the result above (which is based on detrended fluctuation analysis) not to be robust to the changing techniques and parameterizing.

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File URL: http://mpra.ub.uni-muenchen.de/1981/1/MPRA_paper_1981.pdf
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Paper provided by University Library of Munich, Germany in its series MPRA Paper with number 1981.

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Date of creation: 2007
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Handle: RePEc:pra:mprapa:1981
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  1. Carbone, A. & Castelli, G. & Stanley, H.E., 2004. "Time-dependent Hurst exponent in financial time series," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 344(1), pages 267-271.
  2. Cajueiro, Daniel O & Tabak, Benjamin M, 2004. "The Hurst exponent over time: testing the assertion that emerging markets are becoming more efficient," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 336(3), pages 521-537.
  3. Lo, Andrew W, 1991. "Long-Term Memory in Stock Market Prices," Econometrica, Econometric Society, vol. 59(5), pages 1279-313, September.
  4. K. Ivanova & M. Ausloos, 2001. "False EUR exchange rates vs. DKK, CHF, JPY and USD. What is a strong currency?," Papers cond-mat/0103033, arXiv.org.
  5. Couillard, Michel & Davison, Matt, 2005. "A comment on measuring the Hurst exponent of financial time series," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 348(C), pages 404-418.
  6. Ausloos, M & Ivanova, K, 2000. "Introducing False EUR and False EUR exchange rates," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 286(1), pages 353-366.
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