摘要
在这篇文章中,我们导出了在样本容量改变后计算样本均值、方差和协方差矩阵的递推公式,利用这些公式计算诸统计量无论手算是还上机计算都是很方便的.
In this paper we gave the recurrence formula to calculate stati- stics,eg:the Sample Mean,the sample vaviance and the sample vaviance-covariance matrix,when the sample size had chaned.Using these formulas is very Convenient to calcutate statistics in hand or in Computer and Can save large Calculatin.
