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SASInstitute Clinical Trials Programming Using SAS 9.4 Sample Questions:

1. You are working with the VS data set that contains the variable Pulse.

Which PROC SGPLOT step will produce the graph shown below?

A) proc sgplot data = Work.VS noautolegend;
histogram pulse;
density pulse;
run;
B) proc sgplot data = Work.VS noautolegend;
density pulse;
histogram pulse;
run;
C) proc sgplot data = Work.VS noautolegend;
vbarbasic pulse;
density pulse;
run;
D) proc sgplot data = Work.VS noautolegend;
density pulse;
vbarbasic pulse;
run;

2. You are working on validating the ADSL data set which contains the variables subject, sex, age, birth date, baseline height, and baseline weight. These variables are brought in from SDTM, and you derive new variables baseline BMI (from baseline height and weight) and age categorization (from age).

You get the following in the SAS log:

To reconcile this difference, which variable values will be most helpful to provide to the production programmer?

A) SUBJID BLHT BLWT BLBMI
B) SUBJID BLBMI
C) BLBMI
D) AGECAT1 BLBMI

3. Given the SAS data set WORK.VS1:

Which value will be assigned to variable TOTAL?

A) 140
B) 112
C) 560
D) missing

4. The following partial output was produced from the SAS Dictionary Tables.

Which SQL statement produced this output?

A) proc sql;
select * from dictionary.macros
where scope = 'GLOBAL';
quit;
B) proc sql;
select scope, name from dictionary.macros
where scope = 'GLOBAL';
quit;
C) proc sql;
select scope, name from dictionary.macros
where scope = 'global';
quit;
D) proc sql;
select * from dictionary.macros
where scope = 'global';
quit;

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

Solutions: