Complete the following steps to specify the response and factors for a multi-vari chart.
In Response, enter the column that contains the measurement data. You must have observations for at least 60% of all the factor level combinations.
In Factor 1, enter the column that contains the levels for the first factor. Each factor must have at least 2 levels.
(Optional) Specify additional factors, if you have them. In Factor 2, Factor 3, and Factor 4, enter the columns that contains the levels for the additional factors. Each factor must have at least 2 levels.