3.1 - Creating and Redefining Variables3.2 - Using SAS Functions3.3 - Selected SAS Character Functions3.4 - Selected SAS Numeric Functions3.5 - Using IF-THEN Statements3.6 - Grouping Observations with IF-THEN/ELSE Statements3.7 - Subsetting your Data3.8 - Working with SAS Dates3.9 - Selected Date Informats, Functions, and Formats3.10 - Using the RETAIN and Sum Statements3.11 - Simplifying Programs with Arrays3.12 - Using Shortcuts for Lists of Variable Names