Plastics Production quality control Statistical method for using single measurements

Available format(s)

Hardcopy , PDF , PDF 3 Users , PDF 5 Users , PDF 9 Users

Language(s)

English, Russian

Published date

03-12-2010

Publisher

International Organization for Standardization

ISO 25337:2010 describes a statistical, so-called single-measurement, model for using single measurements for production quality control purposes at a producer's manufacturing site, even if a standard test method specifies replicate measurements. The statistical model is also applicable to test methods which call for repeated operations. A general approach to the precision statement in test method standards which produce numerical results is also described. The statistical model is only applicable to test methods which give results that follow a normal (i.e. Gaussian) distribution.

The principle of the statistical model is based on the determination of upper and lower production limits, taking into account the accuracy and the reproducibility of the test method, the latter being added to the production limits in order to define an area outside the production limits in which a test result can fall owing to the nature of the production process and/or the test method.

ISO 25337 is designed for project managers, heads of laboratories and production managers. However, the support of a statistician is highly recommended, and sometimes indispensable, for providing the necessary technical backup and statistical analysis.

DevelopmentNote	Supersedes ISO/DIS 25337. (03/2010)
DocumentType	Standard
Pages	17
PublisherName	International Organization for Standardization
Status	Current

Standards	Relationship
NEN ISO 25337 : 2010	Identical

ISO 5725-1:1994	Accuracy (trueness and precision) of measurement methods and results — Part 1: General principles and definitions
ISO 5725-3:1994	Accuracy (trueness and precision) of measurement methods and results — Part 3: Intermediate measures of the precision of a standard measurement method
ISO 5725-6:1994	Accuracy (trueness and precision) of measurement methods and results — Part 6: Use in practice of accuracy values
ISO 5725-4:1994	Accuracy (trueness and precision) of measurement methods and results Part 4: Basic methods for the determination of the trueness of a standard measurement method
ISO 8423:2008	Sequential sampling plans for inspection by variables for percent nonconforming (known standard deviation)
ISO 5725-2:1994	Accuracy (trueness and precision) of measurement methods and results Part 2: Basic method for the determination of repeatability and reproducibility of a standard measurement method
ISO 5479:1997	Statistical interpretation of data — Tests for departure from the normal distribution
ISO 5725-5:1998	Accuracy (trueness and precision) of measurement methods and results — Part 5: Alternative methods for the determination of the precision of a standard measurement method
ISO 3534-1:2006	Statistics — Vocabulary and symbols — Part 1: General statistical terms and terms used in probability