Explain what is data step?
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What is _n_?
what is validvarname and varnum? why we are using this options; explain with a syntax for this options?
what is ae onset date n what is RDS
How to specify variables to be processed by the freq procedure?
how to remove duplicates using proc sql?
Why is a STOP statement needed for the point=option on a SET statement?
What is program data vector (pdv)?
how we can call macros with in data step?
What are the ways in which macro variables can be created in sas programming?
Explain the purpose of substr functions in sas programming.
Are you involved in writing the inferential analysis plan? Tables specfications?
what is the purpose of _error_? : Sas programming