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xliu1
Quartz | Level 8

I am taking the practice exam for base programming, and was confused about the difference between the project requirements and answer key. Here is the description of the projects. It clearly says to subset the data using the variable kilograms between 40 and 200, inclusively.  However, the answer code is kilograms <40 or kilograms >200  (please see the screenshots below). The results from PROC MEANS analysis are slightly different from what I manually calculated from the raw data, which for group A is 76.02 and group B is 86.25. Thanks in advance!

 

xliu1_2-1696893550507.png

 

xliu1_0-1696893305985.png

 

1 ACCEPTED SOLUTION

Accepted Solutions
Mark2010
SAS Employee

It isn't actually subsetting the data. It is replacing out of range values. The extra piece of information is the in the bullet following the one highlighted. It is preserving the values inclusively between 40 and 200 and only executing the DO group to replace the values if they are outside this range.

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3 REPLIES 3
Tom
Super User Tom
Super User

The code in your picture actually is separating into two groups based on a range from 40 to 200 inclusive.   

The test (40 <= A and A <= 200) is the same as NOT (A<40 or A>200).

 

Mark2010
SAS Employee

It isn't actually subsetting the data. It is replacing out of range values. The extra piece of information is the in the bullet following the one highlighted. It is preserving the values inclusively between 40 and 200 and only executing the DO group to replace the values if they are outside this range.

xliu1
Quartz | Level 8

Thank you for clarify this. 

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