But that tells me the x value.

但这告诉我 x 值。

So this is going to be equal to 41 divided by 42 times our x value.

所以这将等于 41 除以 42 乘以我们的 x 值。

You have to give it your x value.

你必须给它你的 x 值。

Well our line says, you give me an x value, I'm going to tell you what y value I'll predict.

好吧，我们的台词说，你给我一个 x 值，我将告诉你我将预测的 y 值。

How much of the total variation in the y values can be explained by the variation in the x values, or by the line itself?

y 值的总变化有多少可以用 x 值的变化或直线本身来解释？

Now all of a sudden, this is the y value that my line would predict, it's now using this x value and sticking it over here.

现在突然间，这是我的线预测的 y 值， 它现在使用这个 x 值并将它贴在这里。

And then we have-- almost there, home stretch-- we have this over here which is plus 2mb times n times the mean of the x values.

然后我们有 - 几乎在那里，主场延伸 - 我们这里有这个， 它是x值平均值的2mb乘以n倍。