![]() that allow random samples of individual items to be taken from the entity. The procedures are applicable to entities such as lots, process output, etc. This document can be used for various forms of quality inspection in situations where objective evidence of conformity to some declared quality level is to be provided by means of inspection of a sample. ![]() Generally, this document mainly focuses on controlling type I error, which differs from the balancing of the risks in the procedures for acceptance sampling. In contrast to the procedures in the other parts of the ISO 2859 series, the procedures in this document are not applicable to acceptance assessment of lots. The sample sizes for level 0 are designed in a way that the LQR factors of the sampling plans are compatible with the LQR factors for level I. The risk of failing to contradict an incorrectly declared quality level which is related to the LQR is no more than 10 %. For levels I-III, the sampling plans have been devised so as to obtain a risk no more than 5 % of contradicting a correct declared quality level. The limiting quality ratio (LQR) (see Clause 4) of each sampling plan is given for reference. ![]() Sampling plans are provided corresponding to four levels of discriminatory ability. This document establishes single sampling plans for conformance testing, i.e., for assessing whether the quality level of a relevant audit population (lot, process, inventory, file etc) conforms to a declared value.
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