Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[50,60[	55	6	0.05	0.05	0.005
[60,70[	65	15	0.125	0.175	0.0125
[70,80[	75	44	0.366667	0.541667	0.036667
[80,90[	85	15	0.125	0.666667	0.0125
[90,100[	95	19	0.158333	0.825	0.015833
[100,110[	105	11	0.091667	0.916667	0.009167
[110,120[	115	5	0.041667	0.958333	0.004167
[120,130[	125	1	0.008333	0.966667	0.000833
[130,140]	135	4	0.033333	1	0.003333