Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[60,70[	65	4	0.041667	0.041667	0.004167
[70,80[	75	20	0.208333	0.25	0.020833
[80,90[	85	22	0.229167	0.479167	0.022917
[90,100[	95	25	0.260417	0.739583	0.026042
[100,110[	105	14	0.145833	0.885417	0.014583
[110,120[	115	10	0.104167	0.989583	0.010417
[120,130]	125	1	0.010417	1	0.001042