Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[80,90[	85	2	0.027778	0.027778	0.002778
[90,100[	95	8	0.111111	0.138889	0.011111
[100,110[	105	22	0.305556	0.444444	0.030556
[110,120[	115	16	0.222222	0.666667	0.022222
[120,130[	125	13	0.180556	0.847222	0.018056
[130,140[	135	8	0.111111	0.958333	0.011111
[140,150]	145	3	0.041667	1	0.004167