Hi All, I've searched the web up and down, and a few text books, all to no avail. I have two time series (of 30 elements each), and I'd like to test if they are statistically different from each other (I suppose this could be reworded as, "are they equal" or "is their difference statistically different from zero"). I can't for the life of me figure out how to do that. any ideas? Thanks!