Model i)

Dependent Variable: SAVINGS Method: Least Squares Included observations: 236 Variable Coefficient Std. Error t-Statistic Prob. C 292. 1558 421.2480 0.693548 0.4887 INCOME 0.057447 0.001994 28.80965 0.0000 R-squared 0.780074 Mean dependent var 8946.390 Adjusted R-squared 0.779135 S.D. dependent var 9653.484 S.E. of regression 4536.783 Akaike info criterion 19.68626 Sum squared resid 4.82E+09 Schwarz criterion 19.71562 Log likelihood -2320.979 Hannan-Quinn criter. 19.69810 F-statistic 829.9961 Durbin-Watson stat 0.782665 Prob(F-statistic) 0.000000 Savingst = a + B Incomet + VtDependent Variable: SAVINGS Method: Least Squares Included observations: 236 Variable Coefficient Std. Error t-Statistic Prob. C 292. 1558 421.2480 0.693548 0.4887 INCOME BILLIONS 57.44689 1.994015 28.80965 0.0000 R-squared 0.780074 Mean dependent var 8946.390 Adjusted R-squared 0.779135 S.D. dependent var 9653.484 S.E. of regression 4536.783 Akaike info criterion 19.68626 Sum squared resid 4.82E+09 Schwarz criterion 19.71562 Log likelihood -2320.979 Hannan-Quinn criter. 19.69810 F-statistic 829.9961 Durbin-Watson stat 0.782665 Prob(F-statistic) 0.000000