Actions Taken to Improve the Proces

Actions Taken to Improve the Process. Process improvement is the primary
objective of statistical process control. The application of control charts will give information
on two key aspects of the process: statistical control and capability. Figure 7.27
shows the possible states in which the process may exist with respect to these two issues.
Technically speaking, the capability of a process cannot be adequately assessed until statistical control has been established, but we will use a less precise definition of capability that is just a qualitative assessment of whether or not the level of nonconforming units produced is low enough to warrant no immediate additional effort to further improve the process.