Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[60,70[	65	1	0.010204	0.010204	0.00102
[70,80[	75	0	0	0.010204	0
[80,90[	85	6	0.061224	0.071429	0.006122
[90,100[	95	13	0.132653	0.204082	0.013265
[100,110[	105	20	0.204082	0.408163	0.020408
[110,120[	115	28	0.285714	0.693878	0.028571
[120,130[	125	18	0.183673	0.877551	0.018367
[130,140[	135	7	0.071429	0.94898	0.007143
[140,150[	145	4	0.040816	0.989796	0.004082
[150,160]	155	1	0.010204	1	0.00102