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2017-07-15View Original

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Reply #22017-07-15

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Reply #32017-07-16

随机误差也称为偶然误差和不定误差，其产生的原因是分析过程中种种不稳定随机因素的影响，随机误差的大小和正负都不固定,但多次测量就会发现,绝对值相同的正负随机误差出现的概率大致相等,因此它们之间常能互相抵消,所以可以通过增加平行测定的次数取平均值的办法减小随机误差。

Reply #42017-07-16

Reply #52017-07-16

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