Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[30,40[	35	11	0.130952	0.130952	0.013095
[40,50[	45	12	0.142857	0.27381	0.014286
[50,60[	55	15	0.178571	0.452381	0.017857
[60,70[	65	19	0.22619	0.678571	0.022619
[70,80[	75	9	0.107143	0.785714	0.010714
[80,90[	85	0	0	0.785714	0
[90,100[	95	4	0.047619	0.833333	0.004762
[100,110[	105	8	0.095238	0.928571	0.009524
[110,120]	115	6	0.071429	1	0.007143