Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[10,15[	12.5	3	0.05	0.05	0.01
[15,20[	17.5	0	0	0.05	0
[20,25[	22.5	10	0.166667	0.216667	0.033333
[25,30[	27.5	6	0.1	0.316667	0.02
[30,35[	32.5	14	0.233333	0.55	0.046667
[35,40[	37.5	9	0.15	0.7	0.03
[40,45[	42.5	9	0.15	0.85	0.03
[45,50[	47.5	5	0.083333	0.933333	0.016667
[50,55[	52.5	3	0.05	0.983333	0.01
[55,60]	57.5	1	0.016667	1	0.003333