
------------------------------------------------------------
                        grp1                    grp2        
               ---------------------   ---------------------
               SepalWidth       SepalLength       SepalWidth
               ----------   -------------------   ----------
                      (1)        (2)        (3)          (4)
------------------------------------------------------------
SepalLength        -0.313                           0.378***
                  (0.239)                            (0.066)
PetalLength       1.048**              0.776***      -0.188*
                  (0.362)               (0.064)      (0.083)
(Intercept)                 6.526***                        
                             (0.479)                        
SepalWidth                    -0.223   0.432***             
                             (0.155)    (0.081)             
PetalWidth                                          0.626***
                                                     (0.123)
------------------------------------------------------------
SpeciesDummy          Yes                   Yes          Yes
------------------------------------------------------------
Estimator              IV        OLS        OLS          OLS
------------------------------------------------------------
N                     150        150        150          150
R2                  0.080      0.014      0.863        0.635
------------------------------------------------------------

