o******6
发帖数: 538 | 1 ☆─────────────────────────────────────☆
acervulina (acervulina) 于 (Tue Mar 10 13:46:16 2009) 提到:
I have two questions as following, if you know the reason, please explain a
little bit.
Thanks
111.
data exp;
input obs name$ level;
datalines;
1 frank 1
2 joan 2
3 sui 2
4 jose 3
5 burt 4
6 kelly .
7 juan 1
;
run;
data exp1;
set exp;
if level=. then exper='Unknown';
else if level=1 then exper='Low';
else if level=2 or 3 then exper='Medium';
else exper='High';
run;
Which of the following value |
|
