Correlated?

For the overlapping parts, regular correlation coefficient is .349. Spearman's Rho is .357.  But all that changes a lot if you correct for that one place in the middle where the top graph goes up and the bottom one goes down. I think this happens because for most of the overlapping section we are comparing apples with apples, but just at that point, an orange or two got dropped in.

The challenge is to decide when you have reached that magical point where you are manipulating your data rather than evaluating it.

And that's what I'll be spending tomorrow morning doing.