The Full Form of AQL is Acceptance Quality Limit.
It is defined as the worst quality level in a process that is considered to be acceptable for a product from a given sample size in a particular lot or population size. In other words it is the maximum number of defective goods or non-conformities acceptable for a client in a sample size.
Mathematical Expression
Non Conformities per 100 items is expressed as one hundred times the number of non-conformities in a lot or population divided by lot or population size
100p=100 D/N
Where p= number of non-conformities per item
D=number of non-conformities per item
N=lot or population size
AQL
means
Acceptance Quality Limit
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