ISO/TR 9272:2005
橡胶和橡胶制品.试验方法标准的精确度测定
Rubber and rubber products - Determination of precision for test method standards
ISO/TR 9272:2005 发布历史
ISO/TR 9272:2005由国际标准化组织 IX-ISO 发布于 2005-07。
ISO/TR 9272:2005 在中国标准分类中归属于: G40 橡胶制品综合，在国际标准分类中归属于: 83.060 橡胶,83.140.01 橡胶和塑料制品综合。
本标准有等同采用的 中文版 GB/T 14838-2009 橡胶与橡胶制品.试验方法标准精密度的确定
ISO/TR 9272:2005的历代版本如下：
- 2005年 ISO/TR 9272:2005 橡胶和橡胶制品.试验方法标准的精确度测定
- 1986年 ISO/TR 9272:1986 橡胶和橡胶制品.试验方法标准的精确度测定
This Technical Report presents guidelines for determining, by means of interlaboratory test programmes (ITPs), precision for test method standards used in the rubber manufacturing and the carbon black industries. It uses the basic one-way analysis of variance calculation algorithms of ISO 5725 and as many of the terms and definitions of ISO 5725 as possible that do not conflict with the past history and procedures for precision determination in these two industries. Although bias is not determined in this Technical Report, it is an essential concept in understanding precision determination. The ISO 5725 concepts of accuracy and trueness are not determined in this Technical Report. Two precision determination methods are given that are described as “robust” statistical procedures that attempt to eliminate or substantially decrease the influence of outliers. The first is a “level 1 precision” procedure intended for all test methods in the rubber manufacturing industry and the second is a specific variation of the general precision procedure, designated “level 2 precision”, that applies to carbon black testing. Both of these use the same uniform level experimental design and the Mandel h and k statistics to review the precision database for potential outliers. However, they use slight modifications in the procedure for rejecting incompatible data values as outliers. The “level 2 precision” procedure is specific as to the number of replicates per database cell or material-laboratory combination.
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