Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[-30,-25[	-27.5	3	0.037037	0.037037	0.007407
[-25,-20[	-22.5	1	0.012346	0.049383	0.002469
[-20,-15[	-17.5	5	0.061728	0.111111	0.012346
[-15,-10[	-12.5	10	0.123457	0.234568	0.024691
[-10,-5[	-7.5	14	0.17284	0.407407	0.034568
[-5,0[	-2.5	25	0.308642	0.716049	0.061728
[0,5[	2.5	19	0.234568	0.950617	0.046914
[5,10[	7.5	3	0.037037	0.987654	0.007407
[10,15[	12.5	1	0.012346	1	0.002469