Inspection by Attributes: A Method of Comparing Rules for Passing Between Normal and Tightened Inspection

Abstract

Sampling plans for inspection by attributes contain rules for passing from normal to tightened inspection. Usually only the operating characteristic curve (O.C.) will apply but in tightened inspection, lots are unlikely to remain in tightened inspection and inspection will be terminated. This means that the normal and tightened O.C. curves are boundary curves and the true O.C. curve is a composite of both. This article presents a method for calculating the composite O.C. curve and proposes three criteria to compare switching rules.

Citation

Hobbs, C.F. (1987), "Inspection by Attributes: A Method of Comparing Rules for Passing Between Normal and Tightened Inspection", International Journal of Quality & Reliability Management, Vol. 4 No. 4, pp. 47-60. https://doi.org/10.1108/eb002889