Observations			Linear			Polynomial
Interval	#	Obs	$y_{i}$	${\hat{y}}_{i}$	$e_{i}$	$y_{i}$	${\hat{y}}_{i}$	$e_{i}$
0 - 10	2661	5000	0	−0.06	0.06	0	0.156	−0.156
		4680	4.76	4.97	−0.02	4.76	4.47	0.29
10 - 20	45	6384	11.28	20.22	−8.94	11.28	10.76	0.52
		6385	14.47	20.26	−5.78	14.47	10.83	3.64
20 - 30	1691	14,338	26.73	28.74	−2.01	26.73	27.29	−0.56
		9086	29.79	29.34	0.45	29.79	29.80	−0.01
30 - 40	5363	9722	34.74	36.02	−1.28	37.74	34.76	−0.02
		10,738	38.875	36.94	1.93	38.875	38.88	0.00
40 - 50	7284	10,239	41.14	39.85	1.29	41.14	41.62	−0.48
		16,792	49.84	51.81	−1.97	49.84	48.43	1.41
50 - 60	3627	17,209	51.32	54.97	−3.59	51.32	51.31	−0.01
		381	58.12	54.40	3.72	58.12	58.39	−0.27
60 - 72	1529	585	60.56	57.06	3.50	60.56	60.84	−0.28
		846	61.55	58.67	2.88	61.55	62.44	−0.89