Example 34.2 Model Estimation

After studying the output from Example 34.1 and identifying the ARIMA part of the model as, for example, (0 1 1)(0 1 1) 12, you can replace the IDENTIFY statement with the ARIMA and ESTIMATE statements. The parameter estimates and estimation summary statistics are shown in Output 34.2.1.

proc x12 data=sales date=date;
   var sales;
   transform power=0;
   arima model=( (0,1,1)(0,1,1) );
   estimate;
run ;