Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[50,60[	55	3	0.041667	0.041667	0.004167
[60,70[	65	3	0.041667	0.083333	0.004167
[70,80[	75	4	0.055556	0.138889	0.005556
[80,90[	85	9	0.125	0.263889	0.0125
[90,100[	95	13	0.180556	0.444444	0.018056
[100,110[	105	5	0.069444	0.513889	0.006944
[110,120[	115	7	0.097222	0.611111	0.009722
[120,130[	125	15	0.208333	0.819444	0.020833
[130,140[	135	9	0.125	0.944444	0.0125
[140,150[	145	2	0.027778	0.972222	0.002778
[150,160]	155	2	0.027778	1	0.002778