WARNING: Singular covariance - coefficients are not unique
QFCS=C(1)+C(2)/(1+EXP(-C(3)*(CPI(-1)-C(9))-C(4)*(GDP(-1)-C(9))-C(5)
*(HL(-1)-C(9))-C(6)*(M2(-1)-C(9))-C(7)*(OIL(-1)-C(9))-C(8)*(R(-1)
-C(9))))
Coefficient Std. Error t-Statistic Prob.
C(1) -0.055248 NA NA NA
C(2) 0.052812 NA NA NA
C(3) -0.054350 NA NA NA
C(9) -0.029020 NA NA NA
C(4) -0.030476 NA NA NA
C(5) 0.079193 NA NA NA
C(6) 0.015334 NA NA NA
C(7) 0.103036 NA NA NA
C(8) 7533.550 NA NA NA
R-squared 0.000000 Mean dependent var -0.002436
Adjusted R-squared -0.129032 S.D. dependent var 0.154090
S.E. of regression 0.163730 Akaike info criterion -0.663221
Sum squared resid 1.662065 Schwarz criterion -0.376402
Log likelihood 32.54435 Hannan-Quinn criter. -0.549162
Durbin-Watson stat 1.700003
请高人指点下为甚么标准差和统计量值算不出来呢?谢谢!很急呢