Operating Characteristic Curve (OCC)• An operating characteristic curve graphically shows the relationshipbetween lot quality and probability of lot acceptance resulting fromthe use of a sampling plan.• An OC curve shows how well a given sampling plan discriminatesbetween lots of various qualities (i.e., percent defectives).• For example, is the probability of acceptance (Pa) of lot tolerancepercent defective (LTPD) low enough? Is Pa of acceptance quality limit(AQL) high enough? Etc.

The operating characteristic (OC) curve shows the probability o... | Filo