Question 64 : The following SAS program is submitted:

 data work.total;

 set work.salary(keep = department wagerate);

 by department;

 if first.department

 then payroll = 0;

 payroll + wagerate;

 if last.department

 run;

 The SAS data set WORK.SALARY, currently ordered by DEPARTMENT, contains 100 observations for

 each of 5 departments.

 What is the result?

1. The WORK.TOTAL data set contains 5 observations.
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5.  Correct Answer 1 :

 Exp : 

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