[1]熊德之.n维正态各分量的线性组合服从正态分布的一个证明[J].武汉工程大学学报,2010,(03):111-112. XIONG De zhi.A method to prove linear combinations of components of ndimensional normal random variable obey normal distribution[J].Journal of Wuhan Institute of Technology,2010,(03):111-112.
This paper develops a method which uses basic knowledge of calculus and matrix algebra to prove that linear combinations of components of ndimensional normal random variable certainly obey normal distribution.
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