Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[0,5[	2.5	7	0.02518	0.02518	0.005036
[5,10[	7.5	5	0.017986	0.043165	0.003597
[10,15[	12.5	15	0.053957	0.097122	0.010791
[15,20[	17.5	87	0.31295	0.410072	0.06259
[20,25[	22.5	120	0.431655	0.841727	0.086331
[25,30]	27.5	44	0.158273	1	0.031655