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
- Standard No.
- ISO 5725-4:1994
- Release Date
- 1994
- Published By
- International Organization for Standardization (ISO)
- Status
- Replace By
- ISO 5725-4:2020
- Latest
- ISO 5725-4:2020
- Scope
- 1.1 This part of GB/T 6379 provides basic methods for estimating the bias of a measurement method and laboratory bias when applying a measurement method. 1.2 The measurement method involved specifically refers to a measurement method that measures continuous quantities and only takes one measurement value as the test result at a time, although this value may be the calculated result of a group of observation values. 1.3 In order to make measurements under the same conditions, it is important to standardize the measurement methods, and all measurements are performed according to standard methods. 1.4 The bias value is a quantitative estimate of the ability of a measurement method to give a correct (true) value. When the test results and the bias value of the measurement method are reported according to a measurement method, it means that the measurement was performed on the same characteristic using exactly the same method. 1.5 This part of GB/T 6379 only applies to situations where the reference value can be accepted as the agreed truth value. For example, based on a measurement standard and/or a suitable reference material (reference material/reference material), and/or based on a reference measurement method or the preparation of a known sample. A reference material may be: a) a certified reference material; b) a material (substance/material) produced for the purpose of testing with known characteristics; or c) one whose characteristics are measured according to another measurement method with negligible known bias. materials. 1.6 This part of GB/T 6379 only considers the situation of bias estimation for a specific level at a certain time. It does not apply to situations where the measurement of one characteristic will be affected by the level of another characteristic (i.e. not Consider interaction effects). The comparison of the accuracy of the two measurement methods will be considered in GB/T 6379.6. Note 1: In this part of GB/T 6379, the bias considered is only for a certain level at a certain time, so all labels related to level j are omitted.
ISO 5725-4:1994 history
- 2020 ISO 5725-4:2020 Accuracy (trueness and precision) of measurement methods and results — Part 4: Basic methods for the determination of the trueness of a standard measurement method
- 1994 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
