哪位高手帮忙运行一个SAS程序

shiyiming

DATA new;
INPUT y x1 x2 x3 x4@@;
CARDS;
0.7527 1 1 1 1
0.8771 1 2 2 2
0.7588 1 3 3 3
0.7327 2 1 2 3
0.8740 2 2 3 1
0.7542 2 3 1 2
0.7158 3 1 3 2
0.9585 3 2 1 3
0.8433 3 3 2 1
;
RUN;
PROC GLM;
MODEL y=x1 x2 x3 x4
          x1*x1 x2*x2 x3*x3 x4*x4
          x1*x2 x1*x3 x1*x4
          x2*x3 x2*x4
          x3*x4;
RUN;
帮忙解释一下该回归方程是否显著