And this number right here, this is called the coefficient of determination.

这个数字就在这里，这叫做决定系数。

And if this whole thing is close to 1, the whole coefficient of determination, the whole R-squared, is going to be close to 0, which makes sense.

如果这整个事情接近 1，整个决定系数， 整个 R 平方， 将接近 0， 这是有道理的。