Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[50,60[	55	2	0.033333	0.033333	0.003333
[60,70[	65	23	0.383333	0.416667	0.038333
[70,80[	75	9	0.15	0.566667	0.015
[80,90[	85	14	0.233333	0.8	0.023333
[90,100[	95	6	0.1	0.9	0.01
[100,110[	105	4	0.066667	0.966667	0.006667
[110,120[	115	1	0.016667	0.983333	0.001667
[120,130]	125	1	0.016667	1	0.001667