Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[-10,0[	-5	1	0.013514	0.013514	0.001351
[0,10[	5	15	0.202703	0.216216	0.02027
[10,20[	15	13	0.175676	0.391892	0.017568
[20,30[	25	7	0.094595	0.486486	0.009459
[30,40[	35	9	0.121622	0.608108	0.012162
[40,50[	45	7	0.094595	0.702703	0.009459
[50,60[	55	8	0.108108	0.810811	0.010811
[60,70[	65	10	0.135135	0.945946	0.013514
[70,80]	75	4	0.054054	1	0.005405