DIL Regression and Correlation a) Calculate the value of r. Option XI X2 X3 Y 1 12 100 4 9.3 The strength of correlation rubric: 45 50 3 4.8 23 100 A 8.9 Weak : 0 to 0.40 14 100 2 6.5 Moderate: 0.41 to 0.60 56 50 4.2 Somewhat strong: 0.61 to 0.80 89 BO 2 6.2 Strong: 0.81 to 1 12 75 7.A 67 65 4 G.0 All values are: + or - 23 90 3 7.6 10 47 6.1 + = positive direction - = negative direction b) Calculate the value of R2