Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[60,80[	70	3	0.041667	0.041667	0.002083
[80,100[	90	24	0.333333	0.375	0.016667
[100,120[	110	12	0.166667	0.541667	0.008333
[120,140[	130	11	0.152778	0.694444	0.007639
[140,160[	150	11	0.152778	0.847222	0.007639
[160,180[	170	7	0.097222	0.944444	0.004861
[180,200[	190	2	0.027778	0.972222	0.001389
[200,220[	210	0	0	0.972222	0
[220,240[	230	0	0	0.972222	0
[240,260[	250	1	0.013889	0.986111	0.000694
[260,280]	270	1	0.013889	1	0.000694