Hi:
Process capability ratio= (USL-LSL)/ 6 sigma
where USL= upper specification limit
LSL= lower specification limit
sigma= process standard deviation
Process capability refers to the uniformity of the process. ( measure of the
uniformity
of the output).
Basically the process capability ratio is a measure of the ability of the
process to
manufacture product that meets specifications.
Adil Nasir
Process Engineer
Pycon Inc.
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