Abstract:It is well known among practitioners that the seasonal adjustment applied to economic time series could involve several decisions to be made by the econometrician. In this paper, I assess which aggregation strategy delivers the best results for the case of the Chilean GDP 1986-2009 quarterly dataset (base year: 2003. This is done by performing an aggregate-by-disaggregate analysis under di¤erent schemes, as the …xed base year dataset allows this fair comparison. The analysis is based exclusively on seasonal a… Show more
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