SAS 9.4 scenario case 2

[Teeleaf]

In SAS 9.4 scenario 2, one of the condition is to "remove observations with RestHR values that are greater than or equal to 70."

This condition should be written like:

                  where RestHR < 70;

or, the answer is correct and it should be like:

                  where RestHR <= 70;

I just want to check if I understand the question correctly or if i misunderstood the operation sigh.

Thanks!

[ChrisNZ · Accepted solution]

Remove observations with RestHR values that are greater than or equal to 70

is the same as

Keep observations with RestHR values that are smaller than 70

isn't it?

So:    where RestHR < 70;

Unless the where clause is used in a delete statement for example, in which case

   Remove observations with RestHR values that are greater than or equal to 70

is written

   where RestHR >= 70;

[monicaco]

In this case in SAS Book 9.4 preparation, Is the code solution for scenario 2 wrong (page 395)?+
-------
One Direction is:

• Remove observations with RestHR values that are greater than or equal to 70.

data work.stress1;
set cert.stress;
where RestHR <=70;
* this line should be "WHERE RESTHR < 70"*;
TotalTime=(timemin*60)+timesec;
if TotalTime<600 then delete;
run;

proc print data=work.stress1;
run;

Answer for each question
Question 1: 4 observation
Question 2: NA because there are only 4 observation



I appreciate any comment