Model lineal	Model quadratic	Model Inverse	Model Logaritmic	Model Sqrt
(Intercept)	-86.181	143.498**	776.296***	-390.903+	-605.148***
	(67.074)	(44.630)	(194.403)	(207.973)	(136.879)
Population	36.957***
	(2.280)
I(Population^2)		0.511***
		(0.023)
I(1/Population)			-570.112+
			(306.712)
log(Population)				474.307***
				(83.421)
sqrt(Population)					337.267***
					(32.108)
Num.Obs.	28	28	28	28	28
R2	0.910	0.949	0.117	0.554	0.809
R2 Adj.	0.906	0.947	0.083	0.537	0.802
AIC	398.7	383.0	462.7	443.5	419.7
BIC	402.7	387.0	466.6	447.5	423.7
Log.Lik.	-196.373	-188.502	-228.325	-218.760	-206.873
F	262.641	480.407	3.455	32.327	110.338
RMSE	268.91	203.02	841.79	598.20	391.27
+ p < 0.1, * p < 0.05, ** p < 0.01, *** p < 0.001