Testing for invertibility in univariate ARIMA processes
ISSN: 2341-2356
Any de publicació: 1998
Número: 3
Pàgines: 1-7
Tipus: Document de treball
Altres publicacions en: Documentos de Trabajo (ICAE)
Resum
We propose a test statistic for detecting whether a differenced time series follows an invertible ARIMA process. The test follows a X2-1 distribution, it is easy to compute and shows an excellent performance when compared with standard optimal tests for overdifferencing.