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

