F Req ession morthodwee used to analuse the data fiind gsunm

F Req ession morthod(\"wee used to analuse the data fiind gsunmay4 .quantities-were. I40. Iy1,12.75 kg/a_ 8 ! and dra

Solution

This is a case of an univariate regression. Thus we have the intercept term given by B0=Ybar -B1Xbar and we have B1 given by Sum(xy)/Sum(x^2). So in this case B1= 1083.67/143= 7.57 (this is assuming that the value for Sum(x^2) is 142. It is a bit unclear). The Xbar and Ybar values above are the means of X and Y respectively. Now the value of the intercept term is B0=0.6375-(7.57*73.9)=0.64-559.4=-558.7. Thus we will have the regression equation as Y=-558.7 + 7.57*X. The regression line will have a vertical intercept at (0,-558.7). The horizontal intercept will be at (73.8,0). The standard error of the regression is given by Sum(e^2)/(n-1). This is given by Sum(e^2)/19. Here n is the number of observations and also e is the residual from the regression.