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sarafrass
Fluorite | Level 6

Good morning,

 

I'm a new SAS user, I'm using SAS Vyia for learners.

I have a dataset and I found out that most of the missing values are classified as "unknown" instead of the usual "NAs". 

Should I change them with a code or does SAS recognize the fact that "unknown" is a missed value?

If I should change and replace their names in NAs, how may I do?

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