Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[-4,-2[	-3	4	0.065574	0.065574	0.032787
[-2,0[	-1	5	0.081967	0.147541	0.040984
[0,2[	1	9	0.147541	0.295082	0.07377
[2,4[	3	6	0.098361	0.393443	0.04918
[4,6[	5	6	0.098361	0.491803	0.04918
[6,8[	7	10	0.163934	0.655738	0.081967
[8,10[	9	5	0.081967	0.737705	0.040984
[10,12[	11	5	0.081967	0.819672	0.040984
[12,14[	13	8	0.131148	0.95082	0.065574
[14,16[	15	2	0.032787	0.983607	0.016393
[16,18]	17	1	0.016393	1	0.008197