Sample sizes	Normal Exogenous Variables		Uniform Exogenous Variables
Sample sizes	Exact	Over	Exact	Over
10	OLS	OLS	OLS	2SLS\OLS
20	OLS	2SLS	OLS	2SLS
30	OLS	2SLS	OLS	2SLS
50	OLS	3SLS	OLS	2SLS
100	2SLS	2SLS	OLS	2SLS
250	2SLS	FIML	OLS	2SLS
500	2SLS	FIML	OLS	3SLS