What is Process Capability?


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What is Process Capability?

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What is Process Capability?

Process capability compares the process output with the customerís specification.

The purpose of a process capability study is to compare the process specification to the process output and determine statistically if the process can meet the customerís specification.

A capable process is:

  • Stable and not changing.

  • Can fit within the customerís specification with a little extra room (usually 25%) to spare.

The less variation there is in a process, the more capable it will be of meeting the customerís specification.

Capable AND Centered

  • When using process capability as a means for measuring how well our process is producing compared to the customerís requirements, it is not good enough to just make sure the process is capable; it must also be fairly well-centered.

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