What is an acceptable quality level (AQL) in the context of sampling inspection?
A . The average quality level of a satisfactory process
B . The minimum allowable number of defects in a sample
C . The minimum acceptable level of product quality
D . The limit of defective units acceptable in a continuing series of lots
Answer: D
Explanation:
an acceptable quality level (AQL) is defined in ISO 2859-1 as the “quality level that is the worst tolerable”1. This means that the AQL is the limit of defective units that can be accepted in a continuing series of lots during random sampling quality inspections1. The AQL is usually expressed as a percentage or ratio of the number of defects compared to the total quantity1. The AQL helps to induce the supplier to maintain a process average at least as good as the specified limit, while providing an upper limit for the risk to the consumer of accepting the occasional poor lot1.
1: Acceptable Quality Level (AQL): Definition and How It Works – Investopedia
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