The SPC Procedure

You can apply the control limits that are saved in the data table mycas.AllLimits to new data for those processes. The exception summary table in the section Getting Started: SPC Procedure shows unusual variation in the processes Delay and Diameter, whereas the other six processes are stable. The data table mycas.StableProcesses contains additional data for the stable processes. The following statements read the control limits that are saved in the mycas.AllLimits data table and apply them to these new data:

proc spc data=mycas.StableProcesses limits=mycas.AllLimits;
   xrchart;
run;

The resulting exception summary table is shown in Output 20.3.1.

The analysis of the additional process data shows unusual variation in the Partgap process.