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单词 standard deviation
释义 ˌstandard deviˈation

noun

[, ]
() the amount by which measurements for members in a group vary from the average for the group标准差;标准偏差Our survey of 100 people showed that they spent an average of £52 on books per year, with a standard deviation of £12.我们对 100 个人所做的调查显示,他们每年花在买书上的钱平均为 52 英镑,标准偏差 12 英镑。 mean , mode , range
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