我的模型是有6个自变量，6个效率影响因素,42家公司，7个时期。输出结果有以下几个问题：
1.为什么standard-error都是 0.10000000E+01呢？哪里出现问题了？
2.所有影响因素的t-ratio都不显著。这可怎么办呀？
请问是不是命令文件哪里出了问题？急！能我我看看吗?谢谢了！（附件里面有数据文件、命令文件、输出文件）
2 1=ERROR COMPONENTS MODEL, 2=TE EFFECTS MODEL
a1.txt DATA FILE NAME
c1.txt OUTPUT FILE NAME
1 1=PRODUCTION FUNCTION, 2=COST FUNCTION
y LOGGED DEPENDENT VARIABLE (Y/N)
42 NUMBER OF CROSS-SECTIONS
7 NUMBER OF TIME PERIODS
294 NUMBER OF OBSERVATIONS IN TOTAL
6 NUMBER OF REGRESSOR VARIABLES (Xs)
y MU (Y/N) [OR DELTA0 (Y/N) IF USING TE EFFECTS MODEL]
6 ETA (Y/N) [OR NUMBER OF TE EFFECTS REGRESSORS (Zs)]
n STARTING VALUES (Y/N)
IF YES THEN BETA0
BETA1 TO
BETAK
SIGMA SQUARED
GAMMA
MU [OR DELTA0
ETA DELTA1 TO
DELTAP]

NOTE: IF YOU ARE SUPPLYING STARTING VALUES
AND YOU HAVE RESTRICTED MU [OR DELTA0] TO BE
ZERO THEN YOU SHOULD NOT SUPPLY A STARTING
VALUE FOR THIS PARAMETER.



the final mle estimates are :

coefficient standard-error t-ratio

beta 0 0.33419519E+020.10000000E+010.33419519E+02
beta 1 -0.24801163E+010.10000000E+01 -0.24801163E+01
beta 2 0.49315025E-010.10000000E+010.49315025E-01
beta 3 -0.29210432E-020.10000000E+01 -0.29210432E-02
beta 4 -0.28874639E+000.10000000E+01 -0.28874639E+00
beta 5 -0.63928709E+000.10000000E+01 -0.63928709E+00
beta 6 -0.21833126E+010.10000000E+01 -0.21833126E+01
delta 0 -0.49883868E-090.10000000E+01 -0.49883868E-09
delta 1 -0.10927101E-070.10000000E+01 -0.10927101E-07
delta 2 -0.86808617E-070.10000000E+01 -0.86808617E-07
delta 3 -0.59772670E-080.10000000E+01 -0.59772670E-08
delta 4 -0.45352298E-070.10000000E+01 -0.45352298E-07
delta 5 0.41834496E-090.10000000E+010.41834496E-09
delta 6 -0.39116666E-090.10000000E+01 -0.39116666E-09
sigma-squared0.12931449E+010.10000000E+010.12931449E+01
gamma 0.49999994E-010.10000000E+010.49999994E-01