未知σ,t检验法剔除异常值最好

t Test─the Superlative Test to Discard Abnormal Values with σ Unknown

未知总体标准差σ ,在五种检验法中 ,优劣次序为 :t检验法、格拉布斯检验法、峰度检验法、狄克逊检验法、偏度检验法。

Given σ,the population standard deviation, is unknown, the sequence for the five tests arranged in priority order goes like t test, Grubbs test, peakness test, Dixion test, skewness test.