Understanding ASQ-CQA -Knowing The Ways
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Interpreting C p , C pk<br />
―C pk , C pk = min[ USL−ũ<br />
, ũ−LSL<br />
] is an index (a simple number) which measures how close a process<br />
3σ 3σ<br />
is running to its specification limits, relative to the natural variability of the process. <strong>The</strong> larger the<br />
index, the less likely it is that any item will be outside the specs.‖<br />
https://www.isixsigma.com/tools-templates/capability-indices-process-capability/process-capability-cp-cpk-and-process-performance-pp-ppk-what-difference/#defs<br />
Charlie Chong/ Fion Zhang
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