The SHEWHART Procedure
The Index CPL
The process capability index CPL is computed as
![\[ CPL = (\overline{\overline{X}} - LSL)/3\hat{\sigma } \]](images/qcug_shewhart0280.png)
If you do not specify LSL, the variable _CPL_ is assigned a missing value.
The process capability index CPL is computed as
If you do not specify LSL, the variable _CPL_ is assigned a missing value.