Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[5,10[	7.5	1	0.02439	0.02439	0.004878
[10,15[	12.5	2	0.04878	0.073171	0.009756
[15,20[	17.5	4	0.097561	0.170732	0.019512
[20,25[	22.5	17	0.414634	0.585366	0.082927
[25,30[	27.5	11	0.268293	0.853659	0.053659
[30,35[	32.5	3	0.073171	0.926829	0.014634
[35,40]	37.5	3	0.073171	1	0.014634