2012东三省数学建模论文论文

746.62

778.27

800.8

827.75

871.1

912.37

954.28

995.01

1037.2

;

run;

proc gplot data=lzm.shijian;

symbol1 i=spline;

plot renkoushu*year=1;

run;

proc arima data=lzm.shijian;

identify var=renkoushu nlag=12;

run;

identify var=renkoushu(1) nlag=12 minic p=(0:5) q=(0:5);

run;

estimate P=1 plot;

run;

forcast lead=10 interval=qtr id=date out=results;

run;

data results;

set results;

u95=exp(u95);

forecast=exp(forecast+std*std/2);

run;

proc print data=results;

var dyear forcast;

where year>='1jan10'd;

run;

时间序列建模SAS运行输出结果：

The ARIMA Procedure

Name of Variable = renkoushu

Mean of Working Series 445.6878

Standard Deviation 339.0812