" Neither" with a positive; " either" doesn't have the " N" , so the negative is there.

“Neither”加上肯定；“either”没有“N”，因此否定在这里。

Here we have another schwa N, so it's not person, person, It's Person, person, personally.

这里我们有另一个 schwa N， 所以它不是人，人，而是人，人，个人。

It's almost impossible to say an N, so make sure that there's a slightly nasal sound.

几乎不可能说 N， 因此请确保有轻微的鼻音。

And then here, b plus 1 is equal to n, so then n minus k would be equal to this, a plus 1 minus this.

然后在这里， b 加 1 等于 n，所以 n 减 k 等于 this， a 加 1 减 this。

We change the vowel to the schwa, which is absorbed by the N, so you don't even need to think about making a vowel there.

我们将元音更改为 schwa， 它被 N 吸收，所以你甚至不需要考虑在那里制作元音。

Or if we want to talk generally, there are m times n-- so that tells us the total number of samples-- minus 1 degrees of freedom.

或者， 如果我们想笼统地谈论，有m乘以n--所以这告诉我们样本的总数--减去1个自由度。

And then to average, you sum them all up, and then you divide by N. So the variance is the average of the squared distances of each point from the mean.

然后为了求平均值， 你把它们全部相加，然后除以N。 因此，方差是每个点与平均值的平方距离的平均值。

Now, before I explain I want to show you the difference between M and N, so that you can hear and you can see the difference in my mouth when I'm explaining because it can get a bit confusing!

那么，在我解释之前，我想先给你说一下字母 M 和 N 之间的区别，你可以注意听并看我在解释时嘴型的区别，因为它是有一点令人困惑的。