Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[60,80[	70	5	0.041667	0.041667	0.002083
[80,100[	90	9	0.075	0.116667	0.00375
[100,120[	110	13	0.108333	0.225	0.005417
[120,140[	130	46	0.383333	0.608333	0.019167
[140,160[	150	34	0.283333	0.891667	0.014167
[160,180[	170	11	0.091667	0.983333	0.004583
[180,200]	190	2	0.016667	1	0.000833