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st: RE : unexplainable probit results
Hello,
I don't know what exactly is going on but it is probably related that you have far too many explanatory variables, especially for a probit, given that you only have around 40 observations.
Best regards,
Patrick Gaul�
________________________________________
De : [email protected] [[email protected]] de la part de Karen Barroga [[email protected]]
Date d'envoi : vendredi 11 juillet 2008 05:46
� : '[email protected]'
Objet : st: unexplainable probit results
Hi,
I run my variable using probit and got the results below. How come there are no/missing results (dots) for some variables and yet when I run these variables with no results, I get results?
---------
. probit a_w_wt age schyr ricefyr axsta axsc frel8d erel8d owner_dum sumwsdsyield_t sumincome fsizesum Rizal_dum member_dum cx1wwt cx2wwt co1wwt co2wwt cbwwt obwwt ru1wwt ru2wwt pr1wwt pr2wwt tr1e_wwt tr2c_wwt tr3a_wwt tr4y_wwt
Iteration 0: log likelihood = -20.65889
Iteration 1: log likelihood = -7.8035532
Iteration 2: log likelihood = -3.6455341
Iteration 3: log likelihood = -.95822287
Iteration 4: log likelihood = -.25576662
Iteration 5: log likelihood = -.07527036
Iteration 6: log likelihood = -.02337521
Iteration 7: log likelihood = -.00750029
Iteration 8: log likelihood = -.00245924
Iteration 9: log likelihood = -.00081897
Iteration 10: log likelihood = -.000276
Iteration 11: log likelihood = -.00009389
Iteration 12: log likelihood = -.00003219
Iteration 13: log likelihood = -.0000111
Iteration 14: log likelihood = -3.850e-06
Iteration 15: log likelihood = -1.341e-06
Iteration 16: log likelihood = -4.689e-07
Iteration 17: log likelihood = -1.638e-07
Iteration 18: log likelihood = -5.265e-08
Iteration 19: log likelihood = -4.800e-08
Iteration 20: log likelihood = -7.592e-09
Iteration 21: log likelihood = -6.152e-09
Iteration 22: log likelihood = -5.077e-09
Iteration 23: log likelihood = -5.074e-09 (backed up)
Iteration 24: log likelihood = -5.073e-09 (backed up)
Probit regression Number of obs = 43
LR chi2(27) = 41.32
Prob > chi2 = 0.0384
Log likelihood = -5.073e-09 Pseudo R2 = 1.0000
------------------------------------------------------------------------------
a_w_wt | Coef. Std. Err. z P>|z| [95% Conf. Interval]
-------------+----------------------------------------------------------------
age | -.3867675 . . . . .
schyr | 1.086169 . . . . .
ricefyr | .3800124 . . . . .
axsta | -5.547729 . . . . .
axsc | 12.72164 . . . . .
frel8d | -9.253356 . . . . .
erel8d | 12.346 . . . . .
owner_dum | -3.629787 . . . . .
sumwsdsyie~t | 1.31215 . . . . .
sumincome | -.0534748 76.72575 -0.00 0.999 -150.4332 150.3262
fsizesum | 1.128914 . . . . .
Rizal_dum | 2.55781 . . . . .
member_dum | 3.753627 . . . . .
cx1wwt | -1.092271 . . . . .
cx2wwt | 1.702984 . . . . .
co1wwt | -1.846226 . . . . .
co2wwt | -.0006998 . . . . .
cbwwt | 2.786398 . . . . .
obwwt | -2.59865 . . . . .
ru1wwt | -3.898595 . . . . .
ru2wwt | -3.928283 . . . . .
pr1wwt | -9.655389 . . . . .
pr2wwt | .829331 . . . . .
tr1e_wwt | 2.00484 . . . . .
tr2c_wwt | .010138 90.12691 0.00 1.000 -176.6354 176.6556
tr3a_wwt | .0006733 10.95916 0.00 1.000 -21.47889 21.48023
tr4y_wwt | 1.028878 . . . . .
_cons | -9.091063 . . . . .
------------------------------------------------------------------------------
Note: 6 failures and 34 successes completely determined.
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