主题:【求助】化学数理统计

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hualimao
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请问哪位仁兄知道straggler和outlier的区别
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symmacros
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straggler离散值
outlier离群值
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hualimao
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poorlittle
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Information can be obtained by searching with Google using the keywords “straggler, outlier, statistics, definition”

For example :

http://www.astm.org/SNEWS/ND_2008/datapoints_nd08.html

Outliers are also known by other names: maverick, flier, straggler or aberrant
value. .... part of ASTM Committee E11 on Quality and Statistics. ...


http://www.nordicinnovation.net/nordtestfiler/tec482.pdf

Outlier: A member, of a set of values, which is inconsistent with the other members of

that set. The consistency can be tested using graphical or numerical techniques (see

sections 4.3 and 4.4).

Straggler: Similar to an outlier but with less inconsistency (see section 4.4 for criteria).

http://www.icp-forests.org/DocsQualLab/EvaluationSoilRingTests.pdf

Organisation and evaluation of future ring tests for Soil 

Numerical outliers techniques. If test statistic > 1% critical value = outlier.
If test statistic > 5 % critical value = straggler ...
symmacros
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Please refer to the following information,

Extreme values,

      stragglers and outliers

      Extreme values are defined as observations               
      in a sample, so far separated in value from
      the remainder as to suggest that they may
      be from a different population, or the
      result of an error in measurement (6).                                                             

Extreme values can also be subdivided into                                     
stragglers, extreme values detected                                         
      between the 95% and 99% confidence                                                                                                                     
    and outliers; extreme values at >
      99% confidence level.
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2011/4/10 22:47:30 Last edit by jimzhu
symmacros
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hualimao
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