
-----------------------------------------------------------------------
                        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)
-----------------------------------------------------------------------
Species                            Yes           Yes                Yes
-----------------------------------------------------------------------
Estimator             OLS           IV           OLS                OLS
-----------------------------------------------------------------------
N                     150          150           150                150
R2                  0.014        0.080         0.863              0.635
-----------------------------------------------------------------------

