1.1<\/b> This document<\/p>\n
\u2014 amplifies the general principles for designing experiments for the numerical estimation of the precision of measurement methods by means of a collaborative interlaboratory experiment;<\/p>\n
\u2014 provides a detailed practical description of the basic method for routine use in estimating the precision of measurement methods;<\/p>\n
\u2014 provides guidance to all personnel concerned with designing, performing or analysing the results of the tests for estimating precision.<\/p>\n
NOTE Modifications to this basic method for particular purposes are given in other parts of ISO 5725.<\/p>\n
1.2 <\/b>It is concerned exclusively with measurement methods which yield measurements on a continuous scale and give a single value as the test result, although this single value can be the outcome of a calculation from a set of observations.<\/p>\n
1.3 <\/b>It assumes that in the design and performance of the precision experiment, all the principles as laid down in ISO 5725-1 are observed. The basic method uses the same number of test results in each laboratory, with each laboratory analysing the same levels of test sample; i.e. a balanced uniform-level experiment. The basic method applies to procedures that have been standardized and are in regular use in a number of laboratories.<\/p>\n
1.4 <\/b>The statistical model of ISO 5725-1:1994, Clause 5, is accepted as a suitable basis for the interpretation and analysis of the test results, the distribution of which is approximately normal.<\/p>\n
1.5 <\/b>The basic method, as described in this document, (usually) estimates the precision of a measurement method:<\/p>\n
a) when it is required to determine the repeatability and reproducibility standard deviations as defined in ISO 5725-1;<\/p>\n
b) when the materials to be used are homogeneous, or when the effects of heterogeneity can be included in the precision values; and<\/p>\n
c) when the use of a balanced uniform-level layout is acceptable.<\/p>\n
1.6 <\/b>The same approach can be used to make a preliminary estimate of precision for measurement methods which have not reached standardization or are not in routine use.<\/p>\n","protected":false},"excerpt":{"rendered":"
Accuracy (trueness and precision) of measurement methods and results \u2014 Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method<\/b><\/p>\n\n\n
\n Published By<\/td>\n Publication Date<\/td>\n Number of Pages<\/td>\n<\/tr>\n \n ISO<\/b><\/a><\/td>\n 2019-12<\/td>\n 76<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":619304,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[97,251,2634],"product_tag":[],"class_list":{"0":"post-619291","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-03-120-30","7":"product_cat-17-020","8":"product_cat-iso","10":"first","11":"instock","12":"sold-individually","13":"shipping-taxable","14":"purchasable","15":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/619291","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/619304"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=619291"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=619291"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=619291"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}