SI-CHAID is a program for creating and editing CHAID (CHi-squared Automatic Interaction Detector) analyses. It provides a graphical tree diagram, crosstabulations, and a gains chart summary of the results. The Define part of the program is used to set up or modify a CHAID Definition (.chd) file. This includes the selection of the dependent variable, predictor variables, combine-type of the predictors, and options for growing the tree.
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