Proc reg data=ds;
model y=x;
run;
我想看x的系数分别在sample=1 和sample=2 是不是显著相同,我知道可以用wald test,在sas应怎样用的呢?谢谢。
obs | y | x | sample |
1 | 0.8 | 1.3 | 1 |
2 | 0.5 | 0.5 | 1 |
3 | 0.3 | 0.3 | 1 |
4 | 0.1 | 0.5 | 1 |
5 | 0.6 | 0.7 | 1 |
6 | 0.8 | 1.4 | 1 |
7 | 0.2 | 1.0 | 1 |
8 | 0.3 | 0.8 | 1 |
9 | 0.1 | 0.6 | 1 |
10 | 0.3 | 0.4 | 1 |
11 | 0.2 | 0.2 | 2 |
12 | 0.6 | 0.6 | 2 |
13 | 0.0 | 0.5 | 2 |
14 | 1.0 | 1.0 | 2 |
15 | 0.8 | 1.3 | 2 |
16 | 0.7 | 1.1 | 2 |
17 | 0.1 | 0.1 | 2 |
18 | 0.2 | 1.0 | 2 |
19 | 0.5 | 0.8 | 2 |
20 | 0.0 | 0.5 | 2 |