Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[15,15.5[	15.25	8	0.111111	0.111111	0.222222
[15.5,16[	15.75	12	0.166667	0.277778	0.333333
[16,16.5[	16.25	9	0.125	0.402778	0.25
[16.5,17[	16.75	8	0.111111	0.513889	0.222222
[17,17.5[	17.25	8	0.111111	0.625	0.222222
[17.5,18[	17.75	16	0.222222	0.847222	0.444444
[18,18.5]	18.25	11	0.152778	1	0.305556