Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[66,68[	67	2	0.041667	0.041667	0.020833
[68,70[	69	1	0.020833	0.0625	0.010417
[70,72[	71	2	0.041667	0.104167	0.020833
[72,74[	73	12	0.25	0.354167	0.125
[74,76[	75	10	0.208333	0.5625	0.104167
[76,78[	77	10	0.208333	0.770833	0.104167
[78,80[	79	3	0.0625	0.833333	0.03125
[80,82]	81	8	0.166667	1	0.083333