Economical and Practical Aspects of the AOQL Single Sampling Plans

Anotace: Single sampling inspection plans when the remainder of rejected lots is inspected with given Average Outgoing Quality Limit (denoted AOQL) minimizing mean inspection cost per lot of process average quality are presented in this paper. These plans were introduced by Dodge and Romig for inspection by attributes (each inspected item is classified as either good or defective). The corresponding plans for inspection by variables were created by the author of this paper. The comparison of these two types single sampling inspection plans from the economic point of view and the comparison of their operating characteristics (producer’s risk, consumer’s risk) is performed in present paper. We shall also show how the decision problem (inspection by variables or inspection by attributes) can be solved in practice using software Mathematica.