This is the total error, this is the total variation of the numbers.

这是总误差，这是数字的总变异。

Actually, behavioral geneticists believe that less than half of the total weight variation is programmed in the genes, while height is almost entirely genetically determined.

其实，行为遗传学家认为，在总的体重变化中，只有不到一半是由基因编程的，而身高则几乎完全由基因决定。

And then the total variation from the mean, squared distances from the mean of the y, are 22.75.

然后与均值的总变异，与 y 均值的平方距离为 22. 75。

So first, let's figure out the total variation within the group.

所以首先，让我们计算出组内的总变异。

So one way to think about it-- our total variation was 30.

所以一种思考方式——我们的总变异是 30。

We said that the total variation, that if you looked at all 9 data points, is 30.

我们说过，如果你查看所有 9 个数据点，总变异是 30。

How much of the total variation in y?

y 的总变异有多少？

Or another way to think about it is 12% of the total variation is not explained by the variation in x.

或者另一种思考方式是总变异的 12% 不能用 x 的变异来解释。

How much of the total variation in y-- there's obviously variation in y.

y 的总变差有多少——y 有明显的变差。

Now, that was how much of the total variation is due to variation within each sample.

现在，这就是总变异中有多少是由于每个样本内的变异造成的。

This gives you the total variation in y.

这为您提供了 y 的总变化。

So let's just figure out what the total variation in y is.

因此，让我们弄清楚 y 的总变差是多少。

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？

And this is really the total variation in y.

这实际上是 y 的总变差。

Actually, behavioral geneticists believe that less than half of the total weight variation is programed in the genes, while height is almost entirely genetically determined.

事实上，行为遗传学家认为，体重变化中只有不到一半是由基因决定的，而身高几乎完全是由基因决定的。

Because our question is what percent of the total variation is described by the variation in x.

因为我们的问题是 x 的变化描述了总变化的百分比。

It tells us how much of the total variation is not described by the regression line.

它告诉我们有多少总变异没有被回归线描述。

The total variation in y, which is the squared error from the mean of the y's.

y 的总变差，它是 y 的均值的平方误差。

So that means that our variation within each of these samples is a bigger percentage of the total variation versus the variation between the samples.

因此，这意味着我们在这些样本中的每一个中的变异占总变异的百分比与样本之间的变异相比更大。

So if you wanted to know the percentage of the total variation that is not explained by the line, you could take this number divided by this number.

因此，如果您想知道这条线未解释的总变异的百分比，您可以用这个数字除以这个数字。