Parameters | Expression Parameters | Categorical Variables Defining Groups

Categorical Variables Defining Groups
Specify one or more variables whose levels form distinct categories in the model.
Note: The order in which you specify these variables determines how mean values are sorted.
To Specify Variables Defining the One-Way Classification:
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The Available Variables field is populated with variables from the specified data set.
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Left-click a single variable, or hold down Ctrl while left-clicking multiple variables, from the Available Variables field.
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Click to add the selected variable(s) to the Variables Defining the One-Way Classification field.
In this example, observations are first grouped by line, and then by sex, and finally by age.