Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[60,70[	65	12	0.2	0.2	0.02
[70,80[	75	9	0.15	0.35	0.015
[80,90[	85	14	0.233333	0.583333	0.023333
[90,100[	95	6	0.1	0.683333	0.01
[100,110[	105	5	0.083333	0.766667	0.008333
[110,120[	115	4	0.066667	0.833333	0.006667
[120,130[	125	7	0.116667	0.95	0.011667
[130,140]	135	3	0.05	1	0.005