i.day _Iday_1-14 (naturally coded; _Iday_1 omitted)
note: _Iday_2 omitted because of collinearity
note: _Iday_3 omitted because of collinearity
note: _Iday_4 omitted because of collinearity
note: _Iday_5 omitted because of collinearity
note: _Iday_6 omitted because of collinearity
note: _Iday_7 omitted because of collinearity
note: _Iday_8 omitted because of collinearity
note: _Iday_9 omitted because of collinearity
note: _Iday_10 omitted because of collinearity
note: _Iday_11 omitted because of collinearity
note: _Iday_12 omitted because of collinearity
note: _Iday_13 omitted because of collinearity
note: _Iday_14 omitted because of collinearity
Fixed-effects (within) regression Number of obs = 1680
Group variable: day Number of groups = 14
R-sq: within = 0.0185 Obs per group: min = 120
between = 0.3653 avg = 120.0
overall = 0.0029 max = 120
F(2,1664) = 15.71
corr(u_i, Xb) = -0.6249 Prob > F = 0.0000
-------------------------------------------------------------------------------
amountit | Coef. Std. Err. t P>|t| [95% Conf. Interval]
--------------+----------------------------------------------------------------
goalpercentit | -23.75025 17.73019 -1.34 0.181 -58.52608 11.02559
postit | 22638.89 4053.569 5.58 0.000 14688.26 30589.52
_Iday_2 | 0 (omitted)
_Iday_3 | 0 (omitted)
_Iday_4 | 0 (omitted)
_Iday_5 | 0 (omitted)
_Iday_6 | 0 (omitted)
_Iday_7 | 0 (omitted)
_Iday_8 | 0 (omitted)
_Iday_9 | 0 (omitted)
_Iday_10 | 0 (omitted)
_Iday_11 | 0 (omitted)
_Iday_12 | 0 (omitted)
_Iday_13 | 0 (omitted)
_Iday_14 | 0 (omitted)
_cons | -2412.562 2391.109 -1.01 0.313 -7102.461 2277.337
--------------+----------------------------------------------------------------
sigma_u | 13393.318
sigma_e | 60304.097
rho | .04700802 (fraction of variance due to u_i)
-------------------------------------------------------------------------------
F test that all u_i=0: F(13, 1664) = 3.61 Prob > F = 0.0000
变量中postit为虚拟变量,不知道下一步怎么处理,请大神指教。。。。。
其中,使用的部分数据如下:
| id | day | Amountit | GoalPercentit | Postit |
1 | 1 | 1345 | 0.1345 | 0 |
1 | 2 | 775 | 0.2120 | 0 |
1 | 3 | 360 | 0.2480 | 0 |
1 | 4 | 50 | 0.2530 | 0 |
1 | 5 | 105 | 0.2635 | 0 |
1 | 6 | 95 | 0.2730 | 0 |
1 | 7 | 0 | 0.2730 | 0 |
1 | 8 | 0 | 0.3475 | 0 |
1 | 9 | 5 | 0.3480 | 0 |
1 | 10 | 205 | 0.3685 | 0 |
1 | 11 | 1015 | 0.4700 | 0 |
1 | 12 | 5020 | 0.9720 | 0 |
1 | 13 | 520 | 1.0240 | 1 |
1 | 14 | 0 | 1.0240 | 1 |
2 | 1 | 66 | 0.0037 | 0 |
2 | 2 | 0 | 0.0037 | 0 |
2 | 3 | 0 | 0.0037 | 0 |
2 | 4 | 0 | 0.0037 | 0 |
2 | 5 | 510 | 0.0320 | 0 |
2 | 6 | 214 | 0.0439 | 0 |
2 | 7 | 0 | 0.0439 | 0 |
2 | 8 | 36 | 0.3555 | 0 |
2 | 9 | 4642 | 0.6134 | 0 |
2 | 10 | 74 | 0.6175 | 0 |
2 | 11 | 963 | 0.6710 | 0 |
2 | 12 | 102 | 0.6766 | 0 |
2 | 13 | 5922 | 1.0056 | 1 |
2 | 14 | 0 | 1.0056 | 1 |
3 | 1 | 1702 | 0.1702 | 0 |


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