英语词典
It revealed that the product of the standard deviation of the estimated sampling variance and square root of the number of samples was a constant.
实验也证明,取样方差估计值的标准偏差与样本数目的平方根之积可近似为一常数。
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The positive square root of the variance is called the standard deviation.
方差的正的平方根叫做标准差.
词典精选例句
The standard deviation is the square root of the variance.
标准离差是变异的正直根.
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