Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[50,60[	55	2	0.027778	0.027778	0.002778
[60,70[	65	23	0.319444	0.347222	0.031944
[70,80[	75	9	0.125	0.472222	0.0125
[80,90[	85	14	0.194444	0.666667	0.019444
[90,100[	95	6	0.083333	0.75	0.008333
[100,110[	105	5	0.069444	0.819444	0.006944
[110,120[	115	3	0.041667	0.861111	0.004167
[120,130[	125	7	0.097222	0.958333	0.009722
[130,140]	135	3	0.041667	1	0.004167