Process capability analysis entails comparing the performance of a process against its specifications. We say that a process is capable if virtually all of the possible variable values fall within the specification limits. Use a capability chart.
What is process capability analysis used for?
An important technique used to determine how well a process meets a set of specification limits is called a process capability analysis. A capability analysis is based on a sample of data taken from a process and usually produces: 1. An estimate of the DPMO (defects per million opportunities).
How do you perform a process capability analysis?
- Select a candidate for the study. …
- Define the process. …
- Procure resources for the study. …
- Evaluate the measurement system. …
- Prepare a control plan. …
- Select a method for the analysis. …
- Gather and analyze the data. …
- Track down and remove special causes.
