中文名称: 有关异常观测值的规程 |
英文名称:Standard Practice for Dealing With Outlying Observations |
中标分类:A20 | ICS分类:03.120.30 |
标准分类编号:AS | 页数:18 |
发布日期: | 实施日期:2008-10-01 | 作废日期: |
被替代标准: | 代替标准:ASTM E178-2002 | |
引用标准: | 采用标准: | |
起草单位: | 归口单位: |
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范围:1.1 This practice covers outlying observations in samples and how to test the statistical significance of them. An outlying observation, or “outlier,” is one that appears to deviate markedly from other members of the sample in which it occurs. In this connection, the following two alternatives are of interest: 1.1.1 An outlying observation may be merely an extreme manifestation of the random variability inherent in the data. If this is true, the value should be retained and processed in the same manner as the other observations in the sample. 1.1.2 On the other hand, an outlying observation may be the result of gross deviation from prescribed experimental procedure or an error in calculating or recording the numerical value. In such cases, it may be desirable to institute an investigation to ascertain the reason for the aberrant value. The observation may even actually be rejected as a result of the investigation, though not necessarily so. At any rate, in subseq |
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