Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[60,70[	65	3	0.035714	0.035714	0.003571
[70,80[	75	23	0.27381	0.309524	0.027381
[80,90[	85	21	0.25	0.559524	0.025
[90,100[	95	14	0.166667	0.72619	0.016667
[100,110[	105	9	0.107143	0.833333	0.010714
[110,120[	115	11	0.130952	0.964286	0.013095
[120,130]	125	3	0.035714	1	0.003571