| 从不相关、不独立到一个不等号的方向--兼论基本概念和基本技能的重要性 |
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| 引用本文： | 黄迅成. 从不相关、不独立到一个不等号的方向--兼论基本概念和基本技能的重要性[J]. 扬州职业大学学报, 2005, 9(3): 37-41,53 |
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| 作者姓名： | 黄迅成 |
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| 作者单位： | 扬州职业大学 江苏扬州225009 |
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| 摘 要： | 本文指出了台湾某《统计学》[1]中有关不相关不独立的无规律性的论段是不正确的,证明了不相关导致不独立的一个充分必要条件。文中还指出一个不等号的方向导致了《高等数学引论》[2]的一个错误,并对此作了纠正。在教学和研究中,强调基本概念和基本技能在任何时候都有意义的。
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| 关 键 词： | 不相关 不独立 不等式 |
| 文章编号： | 1008-3693（2005）03-0037-05 |
| 收稿时间： | 2005-01-10 |
| 修稿时间： | 2005-01-10 |
From Uncorrelated, Dependent to a Direction of an Inequality-- A Discussion on the Importance of Basic Concepts and Basic Techniques |
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| HUAN Xun-cheng. From Uncorrelated, Dependent to a Direction of an Inequality-- A Discussion on the Importance of Basic Concepts and Basic Techniques[J]. Journal of Yangzhou Polytechnic College, 2005, 9(3): 37-41,53 |
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| Authors: | HUAN Xun-cheng |
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| Affiliation: | Yangzhou Polytechnic College, Yangzhou 225009, China |
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| Abstract: | In this paper,we show it is incorrect that the statement of nothing guarantees the uncorrelatedness not implying independence in the book of "Statistics"~([1]) published in Taiwan.A necessary and sufficient condition for the uncorrelatedness implies the dependence is proved.We also find a mistake in the "Introduction to Higher Mathematics"~([2]) due to the wrong direction of an inequality,and make a necessary correction.Therefore,it is always useful to pay more attention to the basic concepts and basic techniques in teaching and research. |
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| Keywords: | uncorrected dependant inequality |
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