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判断正态样本异常值的简便准则 被引量:6

The Concise Norm to Judge Abnormal Value in Noraml Sampels
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摘要 This paper introduces a measure which obviates the need to consult any tables.Average value x’ and standard deviation s’in this measure arc computed without ineluding suspend value xm.If│xm一x’│/s’>2.58.then xm, is an outlying obscrvation;when n≥9,fiducial probability p>95一99%.As the standard deviation of population σ is given,if│xm一x’│/σ>2.58.tht xm is outlying;when n≥4,p>97一99%.This article also demonstrates that comparing with measures of Grubbs,Nair and Chauvenet.ours is more efficient in judgement under the same or large p. This paper introduces a measure which obviates the need to consult any tables.Average value x' and standard deviation s’in this measure arc computed without ineluding suspend value xm.If│xm一x'│/s’>2.58.then xm, is an outlying obscrvation;when n≥9,fiducial probability p>95一99%.As the standard deviation of population σ is given,if│xm一x’│/σ>2.58.tht xm is outlying;when n≥4,p>97一99%.This article also demonstrates that comparing with measures of Grubbs,Nair and Chauvenet.ours is more efficient in judgement under the same or large p.
作者 王文周 王拓
出处 《统计研究》 CSSCI 北大核心 1996年第4期65-68,共4页 Statistical Research
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