均值和标准差(续) |
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引用本文: | 安文娟,乔南.均值和标准差(续)[J].中学数学教学参考,2011(11):66-67. |
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作者姓名: | 安文娟 乔南 |
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作者单位: | 陕西师范大学 |
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摘 要: | 考虑下述两组分数:
A={4,6,8,10,12,14,16},
B={4,7,9,10,1],13,16}.
注意,A和B的均值以及A和B的中位数都是10,但是每一组中的分数是不同的,并且B组中的分数比A组分数似乎更聚集于10周围.
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关 键 词: | 均值 标准差 分数 中位数 |
The Mean and Standard Deviation |
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Abstract: | Consider the following sets of scores: A= {4,6,8,10,12,14,16}, B= {4,7,9,10,11,13,16}. Note that the means of A and B and the medians of A and B are 10,yet the scores in each set are different and those in B seem to be more closely clustered around 10 than those in A. |
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