Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[5,10[	7.5	1	0.047619	0.047619	0.009524
[10,15[	12.5	1	0.047619	0.095238	0.009524
[15,20[	17.5	3	0.142857	0.238095	0.028571
[20,25[	22.5	11	0.52381	0.761905	0.104762
[25,30[	27.5	3	0.142857	0.904762	0.028571
[30,35]	32.5	2	0.095238	1	0.019048