介绍三种对多指标的质量控制方法，第一种方法是用一个标量控制多变量总体的均值向量和协方差矩阵；

Three approaches to Multivariate quality control are introduced. The first approach is to control the mean vector and covariance matrix of multivariate population in terms of one statistic.

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介绍中位值法和平均值法数字滤波的原理、特点和实例，给出控制输出的归一化模型，以及软件的总体结构。

The principle and characteristic and example of middle value and average value filter is provided, the uniform model of output control and the flow of software is put forward.

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无论在总体平均值上，还是在不同亚种个体同一部位上，赤狐东北亚种上毛的髓质指数均大于华南亚种。

The medulla exponent of upper hair of northeast subspecies was bigger than that of the south either in total average or in the same position of different subspecies.

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When you get--this is Rituparna, counting the leaves on a tree-- you can estimate, from a sample, the population expected values.

如果你...像数叶子的睿都巴若那一样,只有部分样本的话,你可以来估计总体均值

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We can define it in a couple of different ways depending on whether we're talking about sample mean or population mean.

我们有几种不同的方式去定义这个概念,取决于我们指的是,样本均值还是总体均值

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The population mean is often written "X-bar."

总体均值一般写作X拔

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