Ruiz, Ester; Lorenzo, Fernando - Departamento de Economía, Facultad de Ciencias Sociales - 1998
heteroscedasticity. First, the paper illustrates the implications that the presence of outliers and conditional heteroscedasticity have … presence of outliers and conditional heteroscedasticity, and that estimates of the latter are sensitive to the presence of … of inflation. Monthly inflation series seem to be affected by both the presence of outliers and conditional …