Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[15,20[	17.5	1	0.004444	0.004444	0.000889
[20,25[	22.5	0	0	0.004444	0
[25,30[	27.5	0	0	0.004444	0
[30,35[	32.5	0	0	0.004444	0
[35,40[	37.5	2	0.008889	0.013333	0.001778
[40,45[	42.5	1	0.004444	0.017778	0.000889
[45,50[	47.5	1	0.004444	0.022222	0.000889
[50,55[	52.5	6	0.026667	0.048889	0.005333
[55,60[	57.5	40	0.177778	0.226667	0.035556
[60,65[	62.5	93	0.413333	0.64	0.082667
[65,70[	67.5	60	0.266667	0.906667	0.053333
[70,75]	72.5	21	0.093333	1	0.018667