CAPABILITY Procedure

The new CLASS statement enables you to group the data into classification levels. You can specify one or two class variables. Results are computed separately for each classification level, and any chart statements you specify produce comparative charts that are analogous to the comparative histograms produced by the COMPHISTOGRAM statement in previous releases. The COMPHISTOGRAM statement continues to be supported in SAS 9.2, but you cannot specify a CLASS statement together with a COMPHISTOGRAM statement.

You can now superimpose more than one fitted distribution from a given family (two normal curves, for example) on a histogram.