7 ms·
Line of best fit is wrong and a terrible approximation here. If they used a curve fit they'd have seen the line curves up as Admission rate decreases.
by brador 10y ago
Line of best fit is wrong and a terrible approximation here.
If they used a curve fit they'd have seen the line curves up as Admission rate decreases.
- minimaxir 10y agoGranted, "just use a curve fit" hits a different statistical problem. (overfitting)
- brador 10y agoTrue, but it gives a sense of trend granularity which a line doesn't come close to, and is vital here to reject the Economists conclusion.
- ktRolster 10y agoI don't know if it curves up so much as the bottom gets chopped off. In other words, there are fewer bad selective colleges than bad non-selective colleges, but with selective or non-selective the good colleges are equal.