outlier 统计Investigate the ways that outliers are treated in statistics.Explain what reasons researchers may have for including or excluding outliers in their data.请问数学里处理outlier(偏值?异常值?)的方法

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outlier 统计Investigate the ways that outliers are treated in statistics.Explain what reasons researchers may have for including or excluding outliers in their data.请问数学里处理outlier(偏值?异常值?)的方法
outlier 统计
Investigate the ways that outliers are treated in statistics.Explain what reasons researchers may have for including or excluding outliers in their data.
请问数学里处理outlier(偏值?异常值?)的方法

outlier 统计Investigate the ways that outliers are treated in statistics.Explain what reasons researchers may have for including or excluding outliers in their data.请问数学里处理outlier(偏值?异常值?)的方法
我觉得这个可能使用Boxplot(箱线图)来分析,例如如下28个数据.
进行做箱线图,此组数据的outlier值是-2,15
-2, 1, 2, 3, 3, 4, 4, 6, 6, 6, 6, 7, 7, 7, 7, 7, 7, 8, 8, 8, 8, 8, 8, 8, 8, 9, 12, 15
Boxplot里会显示出outlier的值,及四分位数区间,95%置信区间,那您可以使用去掉outlier点的数据进行分析,也可使用1,3分位数区间里的,也可使用95%置信区间里的数据进行分析,具体用哪部份数据还要自已把握,或者三种都分析后比较之间的差异,然后做出不同的解释.