Suggest that a least squares regression line is to be fitted to the data below to find the linear relationship between X and Y.
X 1 2 3 5 6 8 9 11
Y 3.22 2.33 2.28 1.72 1.63 1.57 1.49 1.45
Find (a) Sxx, Sxy, Syy (b) the estimated linear equation that relates X and Y.