Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[5,10[	7.5	8	0.008889	0.008889	0.001778
[10,15[	12.5	43	0.047778	0.056667	0.009556
[15,20[	17.5	109	0.121111	0.177778	0.024222
[20,25[	22.5	300	0.333333	0.511111	0.066667
[25,30[	27.5	302	0.335556	0.846667	0.067111
[30,35[	32.5	80	0.088889	0.935556	0.017778
[35,40[	37.5	21	0.023333	0.958889	0.004667
[40,45[	42.5	20	0.022222	0.981111	0.004444
[45,50[	47.5	0	0	0.981111	0
[50,55[	52.5	16	0.017778	0.998889	0.003556
[55,60[	57.5	0	0	0.998889	0
[60,65]	62.5	1	0.001111	1	0.000222