> And no, you can not get around this problem by doing a multivariate regression of speed on gas pedal and hill. That's because gas pedal and hill will be perfectly colinear.
Um, what? For a constant speed, which is this person's example, this claim is completely false.
When the incline increases, the driver pushes the gas pedal harder. Inline up correlates with gas pedal up. It's a statement of relation between gas pedal and hill incline. The claim is correct.
Um, what? For a constant speed, which is this person's example, this claim is completely false.