For each grouping variable, you must provide a name in the field provided. Select 'Char' or 'Num' to indicate whether the variable has character or numeric levels. Character levels are assumed by default.
If you are defining the rows of the table, enter up to 30 levels of the grouping variable in the vertical sequence of fields provided. If you are defining the columns of the table, enter up to 10 levels of the grouping variable in the horizontal sequence of fields provided. If your data involve replications, you can enter the same factor level for multiple rows or columns.