Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[40,60[	50	1	0.009259	0.009259	0.000463
[60,80[	70	49	0.453704	0.462963	0.022685
[80,100[	90	42	0.388889	0.851852	0.019444
[100,120[	110	7	0.064815	0.916667	0.003241
[120,140[	130	0	0	0.916667	0
[140,160[	150	0	0	0.916667	0
[160,180[	170	0	0	0.916667	0
[180,200[	190	1	0.009259	0.925926	0.000463
[200,220[	210	2	0.018519	0.944444	0.000926
[220,240[	230	1	0.009259	0.953704	0.000463
[240,260[	250	3	0.027778	0.981481	0.001389
[260,280]	270	2	0.018519	1	0.000926