| 标准差优于全距和平均差 |
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| 引用本文： | 关建荣,林湘桂. 标准差优于全距和平均差[J]. 五邑大学学报(自然科学版), 1994, 0(1) |
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| 作者姓名： | 关建荣 林湘桂 |
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| 作者单位： | 广州职工大学，五邑大学经济管理系 |
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| 摘 要： | 本文把总体容量为ｎ＋１而均值是同一常数ａ的全部总体分为ｎ类，在每一类总体中证明了标准差比全距、平均差能更充分地利用和反映总体的标志变动信息，因此标准差优于全距和平均差．
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| 关 键 词： | 标准差，全距，平均差，正交变换，等高线 |
Standard Deviation Has an Advantage Over Total Distance and Mean Deviation |
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| Guan Jianrong,Lin Xianggui. Standard Deviation Has an Advantage Over Total Distance and Mean Deviation[J]. Journal of Wuyi University(Natural Science Edition), 1994, 0(1) |
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| Authors: | Guan Jianrong Lin Xianggui |
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| Affiliation: | Guan Jianrong;Lin Xianggui |
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| Abstract: | In ths paper an populations with same sample size n 1 and same constant sample mean a are arranged into n types. for each type it is proved that standard deviation can more fully utilize and express the informations of the variation of samples than total distance or nean deviation, therefore standard deviation is more advantageous than the latter two. |
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| Keywords: | Standard deviation total distance mean deviation orthogonal transformation contour line |
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