
--------------------------------------------------------------------
                        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
--------------------------------------------------------------------

