Process Capability:

• The inherent ability of a process to meet the expectations of the customer without any additional efforts.
• Provides insight as to whether the process has a :
  • Centering Issue (relative to specification limits)
  • Variation Issue
  • A combination of Centering and Variation
  • Inappropriate specification limits
• Allows for a baseline metric for improvement.
• Measures of Process Capability are:
  • C_p
  • C_pk
  • P_p
  • P_pk