El principio de paridad del poder de compra en América Latina: un análisis con cambio estructural
DOI:
https://doi.org/10.18381/eq.v13i1.4875Keywords:
Paridad de poder de compra, pruebas de raíces unitarias en panel con rupturas, América LatinaAbstract
Sometemos a prueba la hipótesis del principio de paridad del poder adquisitivo (PPP) que sostiene que el tipo de cambio real es estacionario alrededor de una media cambiante, conocida como Quasi-Qualified-PPP. Con datos de 17 países de América Latina, aplicamos pruebas de raíces unitarias en panel con rupturas estructurales en la media de las series. Adicionalmente, obtenemos estimaciones insesgadas de la vida media (half-life) de la convergencia del PPP en el panel de datos considerado, las cuales corrigen en forma simultánea los sesgos inducidos por i) la inapropiada agregación de sección cruzada de coeficientes heterogéneos; ii) la estimación en muestras pequeñas de coeficientes de rezagos dinámicos y iii) la agregación temporal de los precios de los productos básicos. Los resultados verifican el cumplimiento de la Quasi-Qualified-PPP y muestran que la vida media es de aproximadamente 4 años con un intervalo de confianza del 95% de 2.7-6.8 años.Downloads
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