The Enter (Verify) the formula for your model page asks you to enter or verify the formula for your model. The title of the page is "Enter the formula for your model" when you are creating a new model; it is "Verify the formula for your model" when you are modifying an existing template.

Figure 47.10 Enter or Verify the Formula for Your Model Wizard Page

This page has the following controls and fields:

Equation:

displays the equations to apply for modeling.

Variable and Parameter Definitions

displays the list of variable names, types, labels, initial values, whether this variable is an instrument, and output behavior. To specify a value in the table, click in the cell and type the desired value. To add a row to the table, click the Add button . To delete a row from the table, click the Delete button .

All dependent variables are instruments.

indicates whether all of the exogenous variables are to be instrumental variables. (This check box is equivalent to the _EXOG_ option in the INSTRUMENTS statement in the MODEL procedure. See Chapter 18, "The MODEL Procedure" (SAS/ETS User’s Guide), for more information.

Instruments Only Use Intercept

indicates whether to include only the intercept in the list to be instrument variables.

Instruments Include Intercept

indicates whether to include an intercept term and all of the exogenous variables as instrumental variables.

ID

specifies the name of the ID variable to be created for the input data set. You can type any valid SAS variable name in this field or select from the list.

Range:

specifies the time range between observations in the data set. Select a range from list.

Start:

specifies the starting date for the time series in the data set. Enter a date value in this field, using a form that is recognizable as a SAS date informat (for example, 1998:1, feb1997, or 03mar1998).

End:

specifies the ending date for the time series in the data set. Enter a date value in this field, using a form that is recognizable as a SAS date informat (for example, 1998:1, feb1997, or 03mar1998).

SAS Code

provides the SAS statements for the model.

Add button

adds a variable row to the table.

Delete button

removes variable row from the table.