A multiple regression line was calculated in which x1 was a

A multiple regression line was calculated in which x_1 was a student\'s grade point average and x_2 was a student\'s age. The multiple regression line was calculated as y\' = -18.7 + 46.3x_1 + 7.28x_2. If a student has a grade point average of 5.9 and is 20 years old, what is the predicted value of y\'?

Solution

grade point average ( x1) = 5.9, student\'s age(x2) = 20

given that required predicted value of y = -18.7 + 46.3(x1) + 7.28(x2) = -18.7 + 46.3(5.9) + 7.28(20) = 400.07 ~ 400.1