A naive p-value calculation does not take this into account.Note Y-axes doesn't start at zero: I truncated the Y-axes of the graphs above. I also used a line graph, which makes the visual connection stand out more than it deserves. Note Mathematically what I showed is true, but it...
Hey, doesn’t it look likeactual California? Yes, of course! The low correlation value between latitude and longitude is due to thegeographical California shapewhich resembles a line with a negative angular coefficient. Isn’t that funny?