Câu 8: A00-281: SAS Clinical Trials Programming Using SAS 9 - Accelerated Version

Given the following data set: Which program was used to prepare the data for this PROC PRINT output?

1. A. proc sort data=one out=two; by subjid; run;
2. B. proc sort data=one out=two nodupkey; by subjid; run; — đáp án hiện tại
3. C. proc sort data=one out=two nodup; by subjid; run;
4. D. proc sort data=one out=two nodupkey; by subjid trt;