Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[64,66[	65	2	0.027778	0.027778	0.013889
[66,68[	67	2	0.027778	0.055556	0.013889
[68,70[	69	9	0.125	0.180556	0.0625
[70,72[	71	3	0.041667	0.222222	0.020833
[72,74[	73	9	0.125	0.347222	0.0625
[74,76[	75	6	0.083333	0.430556	0.041667
[76,78[	77	13	0.180556	0.611111	0.090278
[78,80[	79	8	0.111111	0.722222	0.055556
[80,82[	81	10	0.138889	0.861111	0.069444
[82,84]	83	10	0.138889	1	0.069444