If you define a numeric variable and assign the result of a character expression to it, SAS tries to convert the character result of the expression to a numeric value and to execute the statement. If ...

Sometimes you will have to substitute a number into an expression with a square number. Remember when a number is squared it is multiplied by itself. This is straightforward when you have a ...

Substitution means putting numbers in place of letters to calculate the value of an expression. An expression can be a combination of numbers, letters and operators, grouped together.