Breakpoint Regression - Quick Tab

The Quick tab of the Breakpoint Regression dialog box contains the options described here.

Variables. Click the Variables button to display the standard variable selection dialog box, in which you select a dependent variable and the independent or predictor variables.

Breakpoint. The Breakpoint group box contains two option buttons: Estimated by program and User-defined.

Estimated by program. Select the Estimated by program option button for STATISTICA to estimate the breakpoint (starting at the mean for the dependent variable).

User-defined. Select the User-defined option button to specify a breakpoint for the regression (in which case, the breakpoint value that you enter in the adjacent box will be treated as a constant in the estimation procedure, rather than as a parameter to be estimated).

See also: Nonlinear Estimation - Piecewise Regression.