ISO DIS 13528

Description / Abstract: This International Standard provides detailed descriptions of statistical methods for organizers to use to design proficiency testing schemes and to analyse the data obtained from those schemes, and provides recommendations on the interpretation of proficiency testing data by participants in such schemes and by accreditation bodies.

This International Standard can be applied to demonstrate that the measurement results obtained by laboratories, inspection bodies, and individuals meet specified criteria for acceptable performance.

This International Standard is applicable to proficiency testing where the results reported are either quantitative or qualitative observations on test items.

NOTE The procedures in this Standard may also be applicable to the assessment of expert opinion where the opinions or judgments are reported in a form which may be compared objectively with an independent reference value or a consensus statistic. For example; when classifying test items into known categories by inspection - or in determining by inspection whether test items arise, or do not arise, from the same original source - and the classification results are compared objectively.