Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[50,60[	55	7	0.0875	0.0875	0.00875
[60,70[	65	12	0.15	0.2375	0.015
[70,80[	75	19	0.2375	0.475	0.02375
[80,90[	85	17	0.2125	0.6875	0.02125
[90,100[	95	12	0.15	0.8375	0.015
[100,110[	105	11	0.1375	0.975	0.01375
[110,120[	115	2	0.025	1	0.0025