Resumo

CORONADO RAMIREZ, Semei  e  GATICA ARREOLA, Leonardo. Problemas de asimetría para el análisis y la predictibilidad del tipo de cambio mexicano. EconoQuantum [online]. 2013, vol.10, n.1, pp.77-89. ISSN 2007-9869.

In this paper we apply a frequency-dominant test of time reversibility, the REVERSE test based on the bispectrum, to explore the high-order spectrum properties of the Mexican exchange rate reversible process. The results show that the series is time irreversible and therefore it does not comply with the property of i.i.d. The result implies that this kind of series cannot be analyzed with GARCH models, since these could drive to wrong economic policies.

Palavras-chave : Irreversibilidad temporal; biespectro, asimetría; tipo de cambio mexicano.

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