by country : rreg XXXXXXXXXXXXXXXXXX
not sorted
r(5);
. sort country
. by country : rreg XXXXXXXXXXXXXXXXXXX
-------------------------------------------------------------------------------------------------------------------------------------------------------------
-> country = 1
not sorted
Huber iteration 1: maximum difference in weights = .73594307
Huber iteration 2: maximum difference in weights = .29660597
Huber iteration 3: maximum difference in weights = .18585558
Huber iteration 4: maximum difference in weights = .07025816
Huber iteration 5: maximum difference in weights = .04247984
Biweight iteration 6: maximum difference in weights = .29881926
Biweight iteration 7: maximum difference in weights = .41229889
Biweight iteration 8: maximum difference in weights = .24627694
Biweight iteration 9: maximum difference in weights = .09056134
Biweight iteration 10: maximum difference in weights = .02040438
Biweight iteration 11: maximum difference in weights = .01049715
Biweight iteration 12: maximum difference in weights = .00483083
Robust regression Number of obs = 52
F( 1, 50) = 30.81
Prob > F = 0.0000
Huber iteration 1: maximum difference in weights = .21259834
Huber iteration 2: maximum difference in weights = .03056369
Biweight iteration 3: maximum difference in weights = .14265647
Biweight iteration 4: maximum difference in weights = .00192243
Robust regression Number of obs = 22
F( 1, 20) = 66.82
Prob > F = 0.0000
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