Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[50,60[	55	2	0.02381	0.02381	0.002381
[60,70[	65	8	0.095238	0.119048	0.009524
[70,80[	75	9	0.107143	0.22619	0.010714
[80,90[	85	4	0.047619	0.27381	0.004762
[90,100[	95	7	0.083333	0.357143	0.008333
[100,110[	105	4	0.047619	0.404762	0.004762
[110,120[	115	5	0.059524	0.464286	0.005952
[120,130[	125	4	0.047619	0.511905	0.004762
[130,140[	135	8	0.095238	0.607143	0.009524
[140,150[	145	12	0.142857	0.75	0.014286
[150,160]	155	21	0.25	1	0.025