Economical Efficiency of the AOQL Plans for Inspection by Variables and their Calculations

Authors: Jindřich Klůfa, Markéta Arltová, Josef Arlt

Abstract: In this paper we shall deal with the AOQL single sampling plans when the remainder of rejected lots is inspected. We shall consider two types of AOQL plans - for inspection by variables and for inspection by variables and attributes (all items from the sample are inspected by variables, remainder of rejected lots is inspected by attributes). These plans we shall compare with the corresponding Dodge-Romig AOQL plans by attributes. We shall report on an algorithm allowing the calculation of these plans when the non-central t distribution is used for the operating characteristic. The calculation is considerably difficult, we shall use an original method and software Mathematica. From the results of numerical investigations it follows that under the same protection of consumer the AOQL plans for inspection by variables are in many situations more economical than the corresponding Dodge- Romig attribute sampling plans (saving of the inspection cost is 70% in any cases).

Pages: 145-149

DOI: 10.46300/9103.2022.10.23

International Journal of Economics and Statistics, E-ISSN: 2309-0685, Volume 10, 2022, Art. #23