Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[9,10[	9.5	1	0.012346	0.012346	0.012346
[10,11[	10.5	2	0.024691	0.037037	0.024691
[11,12[	11.5	7	0.08642	0.123457	0.08642
[12,13[	12.5	9	0.111111	0.234568	0.111111
[13,14[	13.5	20	0.246914	0.481481	0.246914
[14,15[	14.5	13	0.160494	0.641975	0.160494
[15,16[	15.5	12	0.148148	0.790123	0.148148
[16,17[	16.5	4	0.049383	0.839506	0.049383
[17,18]	17.5	13	0.160494	1	0.160494