
------------------------------------------------------------------------
                         grp1               looooooooooooooooogong 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
------------------------------------------------------------------------

