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对批量生产的产(商)品进行质量检查有两种方法,一是全数检查,二是抽样检查。全数检查是对产品批中的全部产品逐件进行检验,从而将产品批中的全部产品分成合格品和不合格品两个部分。抽样检查则是在产品批中按照适当的方法抽取部分样品进行质量检查,依据样本的质量数据对产品批是否合格做出判定。工作实践表明,全数检查与抽样检查有以下重要差别和特点。(1)全数检查将产品批中的全部产品分成合格品和不合格品,因此全数检查的对象是单件产品。全数检查拒收的是少量的被检查出的不合格产品,对供货方的压力不大。而抽样检查的对象是产品批,抽样检查拒收的是被判定为不合格的整个产品批。
There are two ways to carry out the quality inspection on the mass production (merchant) goods: one is the full inspection and the other is the sampling inspection. The full inspection is to inspect all the products in the product batch one by one, so that all the products in the batch are divided into two parts: the qualified product and the unqualified product. Sampling inspection is in the product batch in accordance with the appropriate method of extracting part of the sample for quality inspection, based on the sample of the quality data to determine whether the product batch is qualified. Work practice shows that there are the following important differences and characteristics between the full inspection and the sampling inspection. (1) Full inspection Divide all the products in the product batch into qualified products and nonconforming products, so the object of full inspection is the single product. All check rejected is a small amount of unqualified products being checked, the pressure on the supplier is not. The sampling inspection object is the product batch, rejected by the sampling inspection is judged as unqualified batch of products.