2) With the following table find the best model using Backward Elimination. This was built 19 points of data. [3 marks] F(alb) b a=x 0 = x2 a = xa a = XA None 10.9 8.7 23.2 4.5 X1 305.2 90.6 0.9 X2 123.8 89.2 6.8 X3 5.9 42.3 0.17 X4 99.2 0.8 102.4 X1, X2 4.8 4.3 X1,X3 2.57 1.9 301.7 13.6 X2, X3 65.3 98.7 X2, X4 124.2 202.9 X3, X4 42.8 42.8 XuX2,X3 0.4 *1, X2, X4 0.7 X1, X3, X4 0.8 X2, X3, X4 4.6