The Matrix Is So Beautiful, Right?

If there's a 100 and 80 degree angle between these two data factors, then the co sign of a hundred 80 degrees is going to be a negative one. If you had a whole bunch of variables whose vectors were headed off in very similar directions, we know now that that means that they're very highly corled. But start thinking about the analysis that we do right what it mean when our xes are correlated, our predictors are correlated. That's going to be relevant for some of the statistical thingstht we're going to talk about in a little bit.