| 一个向量二次型均值公式的应用 |
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| 引用本文： | 魏正红.一个向量二次型均值公式的应用[J].合肥工业大学学报(自然科学版),1996(Z1). |
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| 作者姓名： | 魏正红 |
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| 作者单位： | 深圳大学，深圳大学师范学院 |
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| 摘 要： | 在概率统计中，直接求与向量的二次型有关的均值、方差的问题，常常比较复杂，有时甚至感到无从着手，运用文中介绍的公式，会使问题巧妙地获得解决．文章最后还介绍了随机矩阵二次型的期望公式。
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| 关 键 词： | 均值 方差 向量二次型 |
APPLICATIONS OF A FORMULA FOR EXPECTATION OF VECTOR QUADRIC FORM |
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| Wei Zhenghong.APPLICATIONS OF A FORMULA FOR EXPECTATION OF VECTOR QUADRIC FORM[J].Journal of Hefei University of Technology(Natural Science),1996(Z1). |
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| Authors: | Wei Zhenghong |
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| Institution: | Shenzhen University |
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| Abstract: | In probability and mathematic statistics, it is much complex to calculate direct expectation and variance of vector quadric form. By using the formula proposed in this paper,we can easily calculate expectation and varience of vector quatdic form. Finally, we propose a foumula for expectation of quadric form of random matrix. |
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| Keywords: | expectation variance quadric form |
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