Physics homework help

(a)   Explain the following as thoroughly as you can, is there any additional information one would want to, if what is it and why?:             Y = GPA of SU public administration majors             X1 = Age in Months             X2 = Hours of Study per Week              Predicted Y = 0.2 + 0.005 X1 + 0.05 X2              R = .49      rY1.2 = .38     rY2.1 = .41             All coefficients statistically significant at the .05 level.