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technical efficiency estimates :
firm year eff.-est.
1 1 0.78241523E+00
3 1 0.85289653E+00
5 1 0.58206538E+00
7 1 0.62880583E+00
9 1 0.97954594E+00
11 1 0.63614694E+00
13 1 0.81756920E+00
2 2 0.99841247E+00
4 2 0.73382311E+00
6 2 0.91996964E+00
8 2 0.80338038E+00
10 2 0.39336181E+00
12 2 0.48886511E+00
1 3 0.81684922E+00
3 3 0.88120981E+00
5 3 0.84183722E+00
7 3 0.64606630E+00
9 3 0.99069463E+00
11 3 0.59377458E+00
13 3 0.82226209E+00
2 4 0.99755130E+00
4 4 0.77581558E+00
6 4 0.84041504E+00
8 4 0.81947523E+00
10 4 0.46476795E+00
12 4 0.54241122E+00
1 5 0.85061494E+00
3 5 0.79975638E+00
5 5 0.77342500E+00
7 5 0.62891594E+00
9 5 0.99672950E+00
11 5 0.54314285E+00
13 5 0.78957165E+00
2 6 0.10000000E+01
4 6 0.77571768E+00
6 6 0.81613506E+00
8 6 0.81320156E+00
10 6 0.39976664E+00
12 6 0.41610311E+00
mean efficiency = 0.37504446E+00
summary of panel of observations:
(1 = observed, 0 = not observed)
t: 1 2 3 4 5 6
n
1 1 0 1 0 1 0 6
2 0 1 0 1 0 1 6
3 1 0 1 0 1 0 6
4 0 1 0 1 0 1 6
5 1 0 1 0 1 0 6
6 0 1 0 1 0 1 6
7 1 0 1 0 1 0 6
8 0 1 0 1 0 1 6
9 1 0 1 0 1 0 6
10 0 1 0 1 0 1 6
11 1 0 1 0 1 0 6
12 0 1 0 1 0 1 6
13 1 0 1 0 1 0 6
7 6 7 6 7 6 78
为什么效率的计算会有这么多数据残缺啊?求大佬指点
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