Consider the data in (X,Y) form:

(6, 9), (8, 3), (2, 15).

(a) Plot the data.

(b) Calculate the correlation, r, using the computational formula. Show ALL work (including calculating all of the relevant sums in the formula).

(c) Use your calculator to determine the least-squares regression line.___________

(d) Sketch it on your plot.

(e) Make a prediction for the number of mistakes made if x = 6 hours

(f) For x=6, find the residual: ___________