Dear Statalisters,
I am running a ols regression on a small data set. The reported F statistic is still mssing
although the data set doesn' have so-called singleton dummies. Is there anyone knowing what is
going on? Here are the data set and the regression results. Many thanks!
. list var1 var3 var5 var6
+---------------------------+
var1 var3 var5 var6
---------------------------
1. 1 789 0 0
2. 3 45 0 0
3. 5 2358 -4 4
4. 4 65 0 0
5. 5 12 14 -7
---------------------------
6. 453 12 0 0
7. 6 4 0 0
8. 45 2 0 0
9. 8 3 -123 123
10. 897 5 0 0
---------------------------
11. 43 87 0 0
12. 43 56 0 0
13. 4 25 0 0
+---------------------------+
reg var1 var3 var5 var6, robust nocons
Linear regression Number of obs = 13
F( 2, 10) = .
Prob > F = .
R-squared = 0.0002
Root MSE = 318.67
Robust
var1 Coef. Std. Err. t P>t [95% Conf. Interval]
var3 .0046225 .0031 1.49 0.167 -.0022847 .0115297
var5 .7696625 .0060938 126.30 0.000 .7560848 .7832403
var6 .8329636 .007418 112.29 0.000 .8164353 .8494919
Best regards,
Jian Zhang
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