Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[10,15[	12.5	4	0.047619	0.047619	0.009524
[15,20[	17.5	30	0.357143	0.404762	0.071429
[20,25[	22.5	14	0.166667	0.571429	0.033333
[25,30[	27.5	4	0.047619	0.619048	0.009524
[30,35[	32.5	14	0.166667	0.785714	0.033333
[35,40[	37.5	4	0.047619	0.833333	0.009524
[40,45]	42.5	14	0.166667	1	0.033333