Workspace Node: Advanced Regression CHAID - Specifications - Advanced Tab

In the Advanced Regression CHAID workspace node dialog box, under the Specifications heading, select the Advanced tab to access the following options.

Element Name Description
Splitting merged categories When a predictor is used in the splitting criterion, the CHAID analysis merges the current categories into as small a number of categories as possible in order to find a parsimonious split rule for the tree. When this check box is selected, the merged categories are split to optimally select the categories. See also Basic Tree-Building Algorithm: CHAID and Exhaustive CHAID for details.
Bonferroni adjustment As described in Basic Tree-Building Algorithm: CHAID and Exhaustive CHAID, at the point of selecting the best predictor for a split, Statistica finds the predictor with the smallest p-value (greatest statistical significance) for the set of categories for the respective predictor. This p-value can be computed after applying the Bonferroni adjustment.

Options / C / W. See Common Options.

OK Click this button to accept all the specifications made in the dialog box and to close it. The analysis results are placed in the Reporting Documents workspace node after running (updating) the project.