ACF和PACF的图,如何定阶?
初步定p=0 q=(12,12),去掉MU项,只有12阶有系数,结果是
可以通过吗?
可以只有12阶的系数吗?在SAS中运行程序有这样的warning:A polynomial list was compressed to eliminate negative or redundant degrees. Be sure to check the model description to ensure that the proper model was employed.