Variables and definitions

data steps
A sequence of procedures in SAS
keep
SAS procedure specifies the variables to process
libname
Associates or disassociates a SAS data library with a libref
proc freq
A SAS procedure that produces one-way to n-way frequency
proc sort
SAS procedure that orders SAS data set observations by the values of one or more character or numeric variables
SAS libref
SAS procedure that Verifies that a libref has been assigned
Tag Name
Unique name given to each survey
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