Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[5,10[	7.5	267	0.296667	0.296667	0.059333
[10,15[	12.5	14	0.015556	0.312222	0.003111
[15,20[	17.5	63	0.07	0.382222	0.014
[20,25[	22.5	339	0.376667	0.758889	0.075333
[25,30[	27.5	150	0.166667	0.925556	0.033333
[30,35[	32.5	40	0.044444	0.97	0.008889
[35,40[	37.5	7	0.007778	0.977778	0.001556
[40,45[	42.5	11	0.012222	0.99	0.002444
[45,50]	47.5	9	0.01	1	0.002