Parameters | Expression Parameters | Variables Defining the One-Way Classification

Variables Defining the One-Way Classification
Use this field to 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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All of the variables in the data set are displayed in the Available Variables field.
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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.