Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[60,80[	70	4	0.047619	0.047619	0.002381
[80,100[	90	14	0.166667	0.214286	0.008333
[100,120[	110	9	0.107143	0.321429	0.005357
[120,140[	130	6	0.071429	0.392857	0.003571
[140,160[	150	4	0.047619	0.440476	0.002381
[160,180[	170	3	0.035714	0.47619	0.001786
[180,200[	190	4	0.047619	0.52381	0.002381
[200,220[	210	1	0.011905	0.535714	0.000595
[220,240[	230	9	0.107143	0.642857	0.005357
[240,260[	250	25	0.297619	0.940476	0.014881
[260,280]	270	5	0.059524	1	0.002976