b. How much of the variation in the dependent variable is explained by the regre

b. How much of the variation in the dependent variable is explained by the regression equation?c. Is the regression equation as a whole significant at the 5% level?d. If this is an AVC equation is it U-shaped?SUMMARY OUTPUT Regression Statistics
Multiple R 0.730368
R Square 0.533438
Adjusted R Square 0.440125
Standard Error 154.7038
Observations 13 ANOVA
df SS MS F Significance F
Regression 2 273637.6 136818.8 5.716679 0.022108
Residual 10 239332.7 23933.27
Total 12 512970.3 Coefficients Standard Error t Stat P-value
Intercept 4832.007 1229.287 3.930741 0.002817
Q -0.30527 0.133999 -2.27815 0.04593
QSQ 7.23E-06 3.41E-06 2.122731 0.059748