Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[80,90[	85	18	0.25	0.25	0.025
[90,100[	95	10	0.138889	0.388889	0.013889
[100,110[	105	6	0.083333	0.472222	0.008333
[110,120[	115	2	0.027778	0.5	0.002778
[120,130[	125	8	0.111111	0.611111	0.011111
[130,140[	135	9	0.125	0.736111	0.0125
[140,150[	145	10	0.138889	0.875	0.013889
[150,160[	155	8	0.111111	0.986111	0.011111
[160,170]	165	1	0.013889	1	0.001389