Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[-25,-20[	-22.5	5	0.0625	0.0625	0.0125
[-20,-15[	-17.5	6	0.075	0.1375	0.015
[-15,-10[	-12.5	14	0.175	0.3125	0.035
[-10,-5[	-7.5	19	0.2375	0.55	0.0475
[-5,0[	-2.5	29	0.3625	0.9125	0.0725
[0,5]	2.5	7	0.0875	1	0.0175