Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[50,60[	55	2	0.026667	0.026667	0.002667
[60,70[	65	9	0.12	0.146667	0.012
[70,80[	75	14	0.186667	0.333333	0.018667
[80,90[	85	9	0.12	0.453333	0.012
[90,100[	95	4	0.053333	0.506667	0.005333
[100,110[	105	9	0.12	0.626667	0.012
[110,120[	115	11	0.146667	0.773333	0.014667
[120,130[	125	9	0.12	0.893333	0.012
[130,140[	135	7	0.093333	0.986667	0.009333
[140,150]	145	1	0.013333	1	0.001333