1. ## covariance question

Ok, I understand how to get that far, but don't know where to go from there. I know it's something very simple, but I have to teach this to myself since it is an online course.

For the sake of time, i'm gonna let 37.6363=a and 12.545=b. So you must take the sum $\frac{1}{10}[(x_1-a)(y_1-b)+(x_2-a)(y_2-b)+...+(x_{11}-a)(y_{11}-b)]$