使用最小方差法来确定最吻合的直线涉及寻找使预测方差最小的 m和 b的估计值。

Using a least-squared-error criterion to determine the line of best fit involves finding estimates of m and b that minimize the squared error of prediction.

youdao

因为这时模型协方差阵结构仍含有方差参数，因此我们的目标是寻求可行估计。

The variance-covariance matrix still include parameter of variance in this condition, so our purpose is to look for feasible estimations.

youdao

模拟频率间接估计算法的估计方差比直接估计算法的方差要小2 ~ 3个数量级。

The variance of the frequency estimates of indirect method is 2 ~ 3 magnitudes less than that of the direct method.

youdao

I don't find that my analysis is profound in the final answer, I just took some estimates using my data and, again, we could-- if someone wanted to argue with us they could argue with my estimates of the expected returns of the standard deviations and the covariances, but not with this theory.

我在计算过程中并没有做太深入的分析，我只是用我的数据做了一下大概的估计,我再说一次，我们可以-,如果有人想就这个问题与我们争辩,他们可以争论我对期望收益的估计,或是争论标准差和协方差的估计值，但并不会针对理论本身。

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Or, especially when talking about estimates of the variance, we sometimes say S2 or we say standard deviation2.

又或者,在讨论方差估计的时候,我们常用S2,称为标准差的平方

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