For the following data set: X 8 4 6 12 -9 -3 5 y 4 3 31 36 0 4 -3 -11 -16 Send data to Excel Part 1 of 2 (a) Use a TI-84 calculator to compute the coefficient of determination. Round the answer to at least three decimal places. The coefficient of determination is 0.513 Part: 1/2 Part 2 of 2 (b) How much of the variation in the outcome variable is explained by the least-squares regression line? Round the answer to at least one decimal place. The percentage of the variation in the outcome variable is explained by the least-squares regression line is %.