| 统计学中自由度概念的认识 |
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| 引用本文： | 王玺.统计学中自由度概念的认识[J].中国西部科技,2010,9(30):76-76,86. |
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| 作者姓名： | 王玺 |
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| 作者单位： | 上海电力学院,上海200090 |
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| 摘 要： | 样本统计量的自由度是统计学中的基本概念。不同的样本统计量有不同的自由度,其差别来自于样本统计量的结构。以样本方差为例,证明了样本统计量是统计量中包含的独立样本信息的个数。
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| 关 键 词： | 样本统计量 自由度 独立 |
Understanding of the Concept of Degree of Freedom in Statistics |
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| WANG Xi.Understanding of the Concept of Degree of Freedom in Statistics[J].Science and Technology of West China,2010,9(30):76-76,86. |
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| Authors: | WANG Xi |
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| Institution: | WANG Xi (Shanghai University of Electric Power,Shanghai 200090) |
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| Abstract: | Degree of freedom on sample statistics is a basic concept in statistics.Different sample statistics have different degrees of freedom, the difference comes from the structure of the sample statistics.As an example,the conclusion is gained through sample variance that degree of freedom is the number of independent sample information. |
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| Keywords: | Sample statistics Degree of freedom Independent |
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