GB/T 20001.4-2015Rules for drafting standards—Part 4: Test method standards (English PDF)

3.1 Standard Test Method

Test criteria testingstandard

For the purpose specified in the precision range of a given environment, standards and give a full description of test activities and concluded the way.

Note 1. The standard test method is sometimes accompanied by other provisions related to testing, such as sampling, application, order in multiple trials of statistical methods and the like.

Note 2. Where appropriate, the standard test method may be described in the test equipment and tools required for activity.

[GB/T 20000.1-2014, the definition 7.5, modify --- increase the priority terms "Standard Test Method"]

3.2 Accuracy trueness

Test result or measurement result and the true value of the desired degree of consistency.

Note 1. The accuracy of measurement is usually expressed bias.

Note 2. The accuracy is sometimes referred to as "accuracy of the mean", but this usage is not recommended.

Note 3. In practice, the true value with the accepted reference value instead.

[GB/T 3358.2-2009, the definition 3.3.3]

3.3 Precision

Under specified conditions, obtained independent testing/measuring the degree of consistency between the results.

Note 1. The precision depends only on the distribution of random errors, regardless of the true value or the specified value.

Note 2. The measure of precision usually means "not accurate" as used herein to express its standard deviation value with test results or measurement results to represent. The standard deviation

Large, lower precision.