Minimum Size Double Sampling Plans for Large Isolated Lots

Abstract

A common approach to the design of an acceptance sampling plan is to require that the operating characteristic (OC) curve should pass through two designated points that would fix the curve in accordance with a desired degree of discrimination. This paper presents a search procedure for the selection of double sampling inspection plans of type DSP - (0, 1) for specified two points on the OC curve, namely acceptance quality limit, producer's risk, limiting quality and consumer's risk. Selection of the plans is discussed for both the cases of fraction non-conforming and the number of non-conformities per unit.

Keywords:

• Acceptance quality limit
• limiting quality
• double sampling plan
• operating characteristic curve
• single sampling plan

Acknowledgements

The author gratefully acknowledges the comments and helpful suggestions made by an anonymous referee and the editor, Professor Gopal K. Kanji, for improvements in the substance of the paper.