Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[80,100[	90	3	0.035714	0.035714	0.001786
[100,120[	110	3	0.035714	0.071429	0.001786
[120,140[	130	1	0.011905	0.083333	0.000595
[140,160[	150	2	0.02381	0.107143	0.00119
[160,180[	170	9	0.107143	0.214286	0.005357
[180,200[	190	0	0	0.214286	0
[200,220[	210	4	0.047619	0.261905	0.002381
[220,240[	230	32	0.380952	0.642857	0.019048
[240,260[	250	21	0.25	0.892857	0.0125
[260,280]	270	9	0.107143	1	0.005357