An Economic Design of Rectifying Inspection Plans Based on a Correlated Variable

대용품질특성치를 이용한 계수선별형 샘플링 검사방식의 경제적 설계

A sampling plan is presented for situations where sampling inspection is based on the quality characteristic of interest and items in rejected lots are screened based on a correlated variable. A cost model is constructed which involves the costs of misclassification errors, sampling and screening inspections. A method of finding optimal values of sample size, acceptance number and cutoff value on the correlated variable is presented, and numerical studies are given.