Which type of quality control method uses the concept of AQL?

The concept of Acceptable Quality Level (AQL) is fundamentally linked to inspection sampling. AQL is a statistical measurement used to define the maximum number of defective items that can be considered acceptable during the random sampling of a batch. In inspection sampling, AQL helps determine the sample size and the criteria for accepting or rejecting a batch of products based on the number of defects found in that sample.

By using AQL, organizations can manage the quality of their products while balancing the costs associated with inspection and the risk of delivering defective items. This method is particularly useful in industries where some level of defects is permissible, allowing for efficient use of resources while maintaining acceptable quality standards. Thus, it provides a clear framework for evaluating quality through statistical means, making it an essential component of effective quality control practices.