1.) A multiple regression line was calculated in which x1 was a student's grade point average and x2 was a student's age. The multiple regression line was calculated as y' = -18.7 + 46.3 x1 + 7.28 x2. If a student has a grade point average of 5.9 and is 20 years old, what is the predicted value of ?
2.) What is the value of y' when x = 3, if the equation of the regression line is y' = 23.1 - 3.8x ?
A. 4.73
B. 5.29
C. 34.5
D. 11.7
3.) Compute the standard error of the estimate for the data below. X values 56 68 78 85 98 Y values 87 110 138 161 186