Question

Which of the following statements is used to define dependent and independent variables in Proc Reg?

a) DEFINE
b) MODEL
c) VAR
d) REGRESS

Answer 1

In Proc Reg within SAS, the 'MODEL' statement is used to define dependent and independent variables for linear regression analysis. 'DEFINE', 'VAR', and 'REGRESS' are not used for this purpose in Proc Reg.

Step-by-step explanation:

To define dependent and independent variables in Proc Reg, which is a procedure for linear regression analysis in SAS (Statistical Analysis System), you use the statement labeled 'MODEL'. In this statement, you specify the dependent variable followed by the equal sign and then list the independent variables. For instance, MODEL y = x1 x2 x3; will define 'y' as the dependent variable and x1, x2, x3 as independent variables.

The other options given, such as DEFINE, VAR, and REGRESS, are not used in the Proc Reg procedure to define variables. Instead:

• DEFINE is used in other procedures for customization of variable attributes.
• VAR is often used in other procedures to specify variables for analysis.
• REGRESS is not a standard statement in SAS.