Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[60,70[	65	1	0.006173	0.006173	0.00102
[70,80[	75	0	0	0.006173	0
[80,90[	85	6	0.037037	0.04321	0.006122
[90,100[	95	13	0.080247	0.123457	0.013265
[100,110[	105	20	0.123457	0.246914	0.020408
[110,120[	115	28	0.17284	0.419753	0.028571
[120,130[	125	18	0.111111	0.530864	0.018367
[130,140[	135	7	0.04321	0.574074	0.007143
[140,150[	145	4	0.024691	0.598765	0.004082
[150,160]	155	1	0.006173	0.604938	0.00102