Designing optimal double-sampling plan based on process capability index

Mohammad Saber Fallah Nezhad and Sina Seifi

Communications in Statistics - Theory and Methods, 2017, vol. 46, issue 13, 6624-6634

Abstract: Process capability analysis is applied to monitor the process quality. Process capability can be quantified by process capability index. These indices have wide application in quality control methods and acceptance sampling plans. In this paper, we introduce a double-sampling plan based on process capability index. In this type of scheme, under a decision rule and with the specified rejection and acceptance numbers, the second sample is selected and the decision of rejection or acceptance is made based on the information obtained from two samples. The purpose of this scheme is to reduce the average sample number in order to reduce the time and cost of sampling. A comparison study has been conducted in order to evaluate the performance of proposed method in comparison with classical single sampling plans.

Date: 2017
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DOI: 10.1080/03610926.2015.1132325

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