Question

The data set contains nine columns. Given this DATA step, how many columns does have?

data ;
set ;
keep employee_id gender job_title salary;
run;

a. four
b. nine
c. five

Answer 1

The DATA step will result in a new data set that contains four columns, as it uses the 'keep' statement to retain only the specified variables: employee_id, gender, job_title, and salary.

Step-by-step explanation:

The question concerns a DATA step in the programming language used by SAS software. The original data set contains nine columns, but the DATA step specifies the 'keep' statement, which is used to specify a subset of variables to retain in a new data set.

In this DATA step, only the variables employee_id, gender, job_title, and salary are kept. This means that the new data set will contain four columns, corresponding to these specified variables. The 'keep' statement effectively discards all other variables not listed.