Seasonal Adjustment
/*--------------------------------------------------------------
SAS Sample Library
Name: x12ex03.sas
Description: Example program from SAS/ETS User's Guide,
The X12 Procedure
Title: Seasonal Adjustment
Product: SAS/ETS Software
Keys: seasonal adjustment of time series
PROC: X12
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 x12 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;