Missing Values

By default, observations with missing values of a process variable are not processed. If you specify the MISSING option, then missing values are treated as a Pareto category.

Likewise, observations with missing values of the CLASS= variables are not processed by default. Missing values of the first CLASS= variable are treated as a level if the MISSING1 option is specified, and missing values of the second CLASS= variable are treated as a level if the MISSING2 option is specified.