1.1 本规程描述了在E12委员会内针对某些试验方法进行的实验室间研究（ILS）的规划、实施和分析结果的技术。 1.2 本实践不涉及试验方法的制定，而是在试验方法制定完成后收集精度和偏差声明所需的信息。然而，ILS中获得的数据可能表明，需要进一步努力来改进测试方法。 1.3 本规程仅涉及推导多个- 有值被测量值，例如但不限于光谱反射率、透射函数、三刺激值或RGB值。通常通过将数据简化为单值参数（如色差ΔE）来分析此类多值被测物的测量变化。 1.4 本规程涵盖处理色差集变化的非正态分布的方法。这样做是为了用户可以从此类非正态分布中得出有效的统计数据。 1.5 本规程不包括测试方法，即使在委员会E12中，其测量值是单一的- 值，或其变化已知为正态分布。涉及此类测试方法的任务组参考实践 E691 其中包含分析具有这些属性的数据的更好方法。 1.6 本规程的目的不是建立一种估算可能色差公差的方法。 1.7 以国际单位制表示的数值应视为标准。括号中给出的值仅供参考。 1.8 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.9 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 5.1 ASTM法规要求所有试验方法在重复性和再现性方面的精度声明。本规程可用于获取根据规程编制精度声明所需的信息 E177 还有“蓝皮书”

1.1 This practice describes the techniques for planning, conducting, and analyzing the results of an interlaboratory study (ILS) conducted for certain test methods within Committee E12. 1.2 This practice does not concern itself with the development of the test method but rather with the gathering of the information needed for the precision and bias statement after the completion of development of the test method. The data obtained in the ILS may indicate, however, that further effort is needed to improve the test method. 1.3 This practice is concerned exclusively with test methods that derive a multi-valued measurand, such as, but not limited to, spectral reflectance, transmittance function, tristimulus values, or RGB values. Variation in measurements of such multi-valued measurands are usually analyzed by reducing the data to a single-valued parameter, such as color difference, ΔE. 1.4 This practice covers methods of dealing with the non-normal distribution of the variation of sets of color-differences. This is done so that the user may derive valid statistics from such non-normal distributions. 1.5 This practice does not cover test methods, even in Committee E12, whose measurands are single-valued, or whose variations are known to be normally distributed. Task groups involved with such test methods are referred to Practice E691 which contains preferable methods of analyzing data with those properties. 1.6 This practice is not intended to establish a method for estimating possible color-difference tolerances. 1.7 The values stated in SI units are to be regarded as the standard. The values given in parentheses are for information only. 1.8 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.9 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 5.1 ASTM regulations require precision statements for all test methods in terms of repeatability and reproducibility. This practice may be used in obtaining the information needed to prepare a precision statement in accordance with Practice E177 and the “Blue Book.”