ISO/TR 27877 introduces five statistical methods for evaluating the precision of binary measurement methods and their results. The five methods can be divided into two types. Both types are based on measured values provided by each laboratory participating in a collaborative study. In the first type, each laboratory repeatedly measures a single sample. The samples measured by the laboratories are nominally identical. The second type is an extension of the first type, where there are several levels of samples.
For each statistical method, ISO/TR 27877 briefly summarizes its theory and explains how to estimate the proposed precision measures. Some real cases are illustrated to help the readers understand the evaluation procedures involved. For the first and second types of methods, five and three cases are presented, respectively.
ISO/TR 27877 on statistical analysis and evaluation of binary measurement method is useful for:
Several existing studies propose statistical methods for dealing with binary and categorical data, but no guidance documents are available so far.
ISO/TR 27877 define the precision of quantitative measurement methods and their results and assume that the errors follow normal distributions in their basic models. ISO/TR 27877 also guides on how to run experiments to evaluate precision measures, such as repeatability and reproducibility. ISO/TR 27877 summarises various methods to evaluate the precision of binary measurement methods and their results, which are the most essential and frequently used methods for qualitative data.
ISO/TR 27877