And in order to provide an unbiased estimate, you do something very similar to here.

为了提供无偏估计，您需要执行与此处非常相似的操作。

And there's a formula-- and this is actually proven more rigorously than I'll do it-- that is considered to be a better-- or, they'll call it, unbiased-- estimate of the population variance, or the unbiased sample variance.

有一个公式——这实际上被证明比我做的更严格——被认为是更好的——或者，他们称之为无偏——人口方差估计， 或无偏样本方差。