F(20,7) 0.0612Obs*R-squared 25.22425 Prob. Chi-Square(20) 0.1930Scaled explained SS 21.68404 Prob. Chi-Square(20) 0.3579 Test Equation: Dependent Variable: RESID^2 Method: Least Squares Date: 12/25/13 Time: 22:15 Sample: 1985 2012 Included observations: 28 Variable Coefficient Std. Error t-Statistic Prob. C 102.4775 53.52547 1.914556 0.0971X1 0.000584 0.000848 0.688459 0.5133X1^2 -1.41E-08 6.64E-09 -2.122791 0.0714X1*X2 0.005339 0.004363 1.223609 0.2607X1*X3 4.83E-05 1.74E-05 2.767960 0.0278X1*X4 1.97E-05 3.83E-05 0.514159 0.6230X1*X5 2.90E-06 1.14E-05 0.253788 0.8070X2 -359.3139 306.6010 -1.171927 0.2796X2^2 -831.1103 603.1755 -1.377891 0.2107X2*X3 -13.97343 6.003744 -2.327453 0.0528X2*X4 0.763624 3.581992 0.213184 0.8373X2*X5 2.199252 4.370827 0.503166 0.6303X3 1.954345 0.916189 2.133124 0.0703X3^2 -0.023896 0.008348 -2.862552 0.0242X3*X4 -0.038380 0.046141 -0.831797 0.4330X3*X5 -0.031057 0.013544 -2.293049 0.0556X4 -0.869553 2.135113 -0.407263 0.6960X4^2 -0.024785 0.023373 -1.060423 0.3242X4*X5 0.001446 0.028904 0.050027 0.9615X5 -2.070994 1.291543 -1.603503 0.1529X5^2 0.009023 0.007893 1.143067 0.2906 R-squared 0.900866 Mean dependent var 0.137157Adjusted R-squared 0.617626 S.D. dependent var 0.233092S.E. of regression 0.144136 Akaike info criterion -0.922415Sum squared resid 0.145426 Schwarz criterion 0.076738Log likelihood 33.91381 Hannan-Quinn criter. -0.616964F-statistic 3.180574 Durbin-Watson stat 2.399867Prob(F-statistic) 0.061204 他的自由度是20还是别的?

eviews怀特检验 自由度个数
Heteroskedasticity Test: White F-statistic 3.180574 Prob. F(20,7) 0.0612Obs*R-squared 25.22425 Prob. Chi-Square(20) 0.1930Scaled explained SS 21.68404 Prob. Chi-Square(20) 0.3579 Test Equation: Dependent Variable: RESID^2 Method: Least Squares Date: 12/25/13 Time: 22:15 Sample: 1985 2012 Included observations: 28 Variable Coefficient Std. Error t-Statistic Prob. C 102.4775 53.52547 1.914556 0.0971X1 0.000584 0.000848 0.688459 0.5133X1^2 -1.41E-08 6.64E-09 -2.122791 0.0714X1*X2 0.005339 0.004363 1.223609 0.2607X1*X3 4.83E-05 1.74E-05 2.767960 0.0278X1*X4 1.97E-05 3.83E-05 0.514159 0.6230X1*X5 2.90E-06 1.14E-05 0.253788 0.8070X2 -359.3139 306.6010 -1.171927 0.2796X2^2 -831.1103 603.1755 -1.377891 0.2107X2*X3 -13.97343 6.003744 -2.327453 0.0528X2*X4 0.763624 3.581992 0.213184 0.8373X2*X5 2.199252 4.370827 0.503166 0.6303X3 1.954345 0.916189 2.133124 0.0703X3^2 -0.023896 0.008348 -2.862552 0.0242X3*X4 -0.038380 0.046141 -0.831797 0.4330X3*X5 -0.031057 0.013544 -2.293049 0.0556X4 -0.869553 2.135113 -0.407263 0.6960X4^2 -0.024785 0.023373 -1.060423 0.3242X4*X5 0.001446 0.028904 0.050027 0.9615X5 -2.070994 1.291543 -1.603503 0.1529X5^2 0.009023 0.007893 1.143067 0.2906 R-squared 0.900866 Mean dependent var 0.137157Adjusted R-squared 0.617626 S.D. dependent var 0.233092S.E. of regression 0.144136 Akaike info criterion -0.922415Sum squared resid 0.145426 Schwarz criterion 0.076738Log likelihood 33.91381 Hannan-Quinn criter. -0.616964F-statistic 3.180574 Durbin-Watson stat 2.399867Prob(F-statistic) 0.061204 他的自由度是20还是别的?