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SASInstitute Clinical Trials Programming Using SAS 9.4 Sample Questions:

1. In PROC REPORT, which usage creates a column in the report for each distinct formatted value of the variable listed in the DEFINE statement?

A) GROUP
B) DISPLAY
C) ANALYSIS
D) ACROSS

2. Which program will report all created output objects in the log?

A) proc ttest data=WORK.DATA1 ods=trace; class TREAT; var RESULTS; run;
B) ods trace on; proc ttest data=WORK.DATA1; class TREAT; var RESULTS; run;
C) ods trace log; proc ttest data=WORK.DATA1; class TREAT; var RESULTS; run;
D) ods trace=log; proc ttest data=WORK.DATA1; class TREAT; var RESULTS; run;

3. This question will ask you to provide a section of missing code.
Given the input SAS data set LABRAW:

Which DO LOOP will create the output SAS data set WORK.LAB_NEW?

A) do i=1 to 2; do j=1 to 2; visit=i; date=dat{j}; result=num{j}; output; end;
B) do i=1 to 2; visit=i; date=dat{i}; result=num{i}; output; end;
C) do i=1 to 2; visit=i; date=dat{i}; result=num{i}; end; output;
D) do i=1 to 2; do j=1 to 2; visit=i; date=dat{j}; result=num{j}; end; output; end;

4. This question will ask you to provide lines of missing code.
Given the following SCORE data set:

Variable LOCF contains the imputed score that would replace the missing SCORE value (based on last observation carried forward method).
Which SAS statements complete the program?

A) retain score; if first.subject then LOCF = .; if score ^= . then LOCF = score;
B) retain LOCF; if first.subject then LOCF = .; if score ^= . then LOCF = score;
C) if first.subject then LOCF = .; if score = . then LOCF = lag(score);
D) LOCF = lag(score); if first.subject then LOCF = .; if score ^= . then LOCF = score;

5. The PROC SGPLOT step below needs to be modified to format the values on the horizontal axis.
proc sgplot data = work.adlb;
histogram AVAL;
<insert code here>
run;
Which statement CANNOT be used to format the values due to a syntax error?

A) format AVAL 8.2;
B) xaxis valuesformat = comma8.2;
C) xaxis valuesformat = 8.2;
D) format AVAL comma8.2;

Solutions: