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

