Estimates of the bias and MSE of the OLS estimator and the homoscedastic IV estimator (IV homo) and the heteroskedastic IV estimator (IV hete) of <i>β</i>_<i>i</i>.

In brackets the standard error of the estimate of the expected value of the bias and MSE. Results based on 1000 replications of the data generator model given by Eqs (6) to (11) and parameters from Table 2 and sample size n.括号内为偏差（bias）与均方误差（mean squared error, MSE）的期望估计量的标准误。本研究结果均基于由式(6)至式(11)定义的数据生成模型、表2所给参数以及样本量n，经1000次重复模拟得到。