Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[20,25[	22.5	4	0.047619	0.047619	0.009524
[25,30[	27.5	2	0.02381	0.071429	0.004762
[30,35[	32.5	8	0.095238	0.166667	0.019048
[35,40[	37.5	18	0.214286	0.380952	0.042857
[40,45[	42.5	11	0.130952	0.511905	0.02619
[45,50[	47.5	17	0.202381	0.714286	0.040476
[50,55[	52.5	12	0.142857	0.857143	0.028571
[55,60[	57.5	8	0.095238	0.952381	0.019048
[60,65[	62.5	3	0.035714	0.988095	0.007143
[65,70]	67.5	1	0.011905	1	0.002381