Treating categorical data as continuous can have a serious impact on the quality of a model, especially if it's the target field (for example, producing a regression model rather than a binary model). To prevent this, you can convert integer ranges to categorical types such as Ordinal or Flag.

1. Double-click a Type node to open its properties. Expand the Type Operations section.
2. Specify a value for Set continuous integer field to ordinal if range less than or equal to.
3. Click Apply to convert the affected ranges.
4. If desired, you can also specify a value for Set categorical fields to None if they exceed this many values to automatically ignore large sets with many members.