Use this field to specify one or more variables whose levels form distinct categories in the model .All of the variables in the data set are displayed in the Available Variables field.
Highlight one or more variables. To highlight multiple variables at once, hold down while left-clicking on them.
Click to add the highlighted variable(s) to the Variables Defining the One-Way Classification field, as shown below:In this example, observations are first grouped by line, then by sex, and finally, by age.