data a;
input x y;
z=-0.1190 -0.0532*x +1.0087*x*x;
cards;
1 1
2 4
3 8
4 16
5 25
6 36
7 49
8 64
9 81
;
run;
proc nlin data=a;
parms c=0;
model y=c*x*x;
run;
Iterative Phase
Sum of
Iter c Squares
0 0 15316.0
1 0.9994 0.9947
诸位大神,请问为什么这里输出结果c的拟合结果时不是1?谢谢!!