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	4	0.055556	0.083333	0.005556
[100,110[	105	11	0.152778	0.236111	0.015278
[110,120[	115	19	0.263889	0.5	0.026389
[120,130[	125	10	0.138889	0.638889	0.013889
[130,140[	135	11	0.152778	0.791667	0.015278
[140,150[	145	7	0.097222	0.888889	0.009722
[150,160[	155	6	0.083333	0.972222	0.008333
[160,170]	165	2	0.027778	1	0.002778