but Jackson insists it is not that simple. "Certainly we did not want to make a film that casts judgment on people's religious beliefs,"

VOA: standard.2010.01.08

They divide by n-1 to make it an unbiased estimator of the population variance, but I'm just going to show it in a simple way here.

当除以n-1表示的是对总体的,无偏估计,我在这里只是说的简单一点

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