Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[80,90[	85	1	0.016667	0.016667	0.001667
[90,100[	95	3	0.05	0.066667	0.005
[100,110[	105	7	0.116667	0.183333	0.011667
[110,120[	115	10	0.166667	0.35	0.016667
[120,130[	125	9	0.15	0.5	0.015
[130,140[	135	9	0.15	0.65	0.015
[140,150[	145	6	0.1	0.75	0.01
[150,160[	155	9	0.15	0.9	0.015
[160,170]	165	6	0.1	1	0.01