Seasonal Adjustment

/*--------------------------------------------------------------

                    SAS Sample Library

        Name: x13ex03.sas
 Description: Example program from SAS/ETS User's Guide,
              The X13 Procedure
       Title: Seasonal Adjustment
     Product: SAS/ETS Software
        Keys: seasonal adjustment of time series
        PROC: X13
       Notes:

--------------------------------------------------------------*/

data sales;
   set sashelp.air;
   sales = air;
   date = intnx( 'month', '01sep78'd, _n_-1 );
   format date monyy.;
run;

ods output D8A#1=SalesD8A_1;
ods output D8A#2=SalesD8A_2;
ods output D8A#3=SalesD8A_3;
ods output D8A#4=SalesD8A_4;
proc x13 data=sales date=date;
   var sales;
   transform power=0;
   arima model=( (0,1,1)(0,1,1) );
   estimate;
   x11;
run;

title 'Stable Seasonality Test';
proc print data=SalesD8A_1 LABEL;
run;

title 'Nonparametric Stable Seasonality Test';
proc print data=SalesD8A_2 LABEL;
run;

title 'Moving Seasonality Test';
proc print data=SalesD8A_3 LABEL;
run;

title 'Combined Seasonality Test';
proc print data=SalesD8A_4 LABEL NOOBS;
   var _NAME_ Name1 Label1 cValue1;
run;