Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[10.5,11[	10.75	2	0.034483	0.034483	0.068966
[11,11.5[	11.25	6	0.103448	0.137931	0.206897
[11.5,12[	11.75	18	0.310345	0.448276	0.62069
[12,12.5[	12.25	12	0.206897	0.655172	0.413793
[12.5,13]	12.75	20	0.344828	1	0.689655