ASWSBE15 15.E.013.MI.
The following estimated regression equation based on 30 observations was presented.
ŷ = 17.6 + 3.8x1 − 2.3x2 + 7.6x3 + 2.7x4
The values of SST and SSR are 1,807 and 1,759, respectively.
(a)
Compute R2. (Round your answer to three decimal places.)
R2 =
(b)
Compute
Ra2.
(Round your answer to three decimal places.)
Ra2 =
(c)
Comment on the goodness of fit. (For purposes of this exercise, consider a proportion large if it is at least 0.55.)
The estimated regression equation did not provide a good fit as a large proportion of the variability in y has been explained by the estimated regression equation.The estimated regression equation did not provide a good fit as a small proportion of the variability in y has been explained by the estimated regression equation. The estimated regression equation provided a good fit as a small proportion of the variability in y has been explained by the estimated regression equation.The estimated regression equation provided a good fit as a large proportion of the variability in y has been explained by the estimated regression equation.