Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[5,10[	7.5	21	0.164062	0.164062	0.032813
[10,15[	12.5	55	0.429688	0.59375	0.085938
[15,20[	17.5	30	0.234375	0.828125	0.046875
[20,25[	22.5	14	0.109375	0.9375	0.021875
[25,30[	27.5	4	0.03125	0.96875	0.00625
[30,35]	32.5	4	0.03125	1	0.00625