Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[40,60[	50	9	0.083333	0.083333	0.004167
[60,80[	70	37	0.342593	0.425926	0.01713
[80,100[	90	26	0.240741	0.666667	0.012037
[100,120[	110	17	0.157407	0.824074	0.00787
[120,140[	130	1	0.009259	0.833333	0.000463
[140,160[	150	1	0.009259	0.842593	0.000463
[160,180[	170	3	0.027778	0.87037	0.001389
[180,200[	190	7	0.064815	0.935185	0.003241
[200,220[	210	4	0.037037	0.972222	0.001852
[220,240]	230	3	0.027778	1	0.001389