Average outgoing quality is the mean fraction defective after inspection when the fraction defective before inspection was \(p\), lot size is \(N\) and plan \((n,k)\) is used for sampling inspection. The average outgoing quality (assuming that all defective items found are replaced by good ones) is approximately
$$AOQ(p)=\left(1-\frac{n}N\right)\!\cdot p\cdot\!L(p;n,c).$$