This is question 5 from Chapter 2 SAS Certification Prep Guide, edition 2018 5. With the system option VALIDVARNAME=ANY, which of the following variable names is valid? a 4BirthDate b $Cost c _Items_ d Tax-Rate e All of the above My answer is e. Answer from the book Correct answer: c Variable names follow the same rules as SAS data set names. They can be 1 to 32 characters long, must begin with a letter (A-Z, either uppercase or lowercase) or an underscore, and can continue with any combination of numbers, letters, or underscores. It seems that in the explanation missed VALIDVARNAME option, which is set to ANY. That means that there are no SAS rules to apply for variables names. Can you clarify the correct answer?
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