§ 42.142 Curve for obtaining Operating Characteristic (OC) curve information for skip lot sampling and inspection. 100 Percent of Lots Expected To Be Accepted When Using Skip Lot Sampling And Inspection, Pas NOTES: 1. This curve applies only to the specific skip lot sampling and inspection plan described in § 42.121 and § 42.123. 2. Pa and Pas are essentially equal for values under 50 percent. [41 FR 42641, Sept. 28, 1976. Redesignated at 42 FR 32514, June 27, 1977 and further redesignated at 45 FR 69424, Oct. 21, 1980 and 46 FR 63203, Dec. 31, 1981] § 42.143 Operating Characteristic (OC) curves for on-line sampling and inspection. (a) This section contains the Operating Characteristic (OC) curve for each of the one-line cumulative sum sampling bplans provided in Subpart D. The OC curve and the corresponding cumulative sum sampling plans are listed by AQL. (b) Different plan parameters used to make acceptance and rejection decisions are provided for each AQL. (c) The curves show the ability of the various cumulative sum sampling plans to distinguish between good and bad portions of production. The interpretation of these curves for portions of production is similar to the interpretation of the OC curves for stationary lots as illustrated in § 42.140(c). REDUCED AND NORMAL INSPECTION PLANS-SAMPLING PLANS AND OPERATING CHARACTERISTIC (OC) CURVES FOR AQL=2.50 DEFECTS PER HUNDRED UNITS TIGHTENED INSPECTION PLANS-SAMPLING PLANS AND OPERATING CHARACTERISTIC (OC) CURVES FOR AQL=2.50 DEFECTS PER HUNDRED UNITS 53-006 0-85--50 |