Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[17,17.5[	17.25	2	0.033333	0.033333	0.066667
[17.5,18[	17.75	10	0.166667	0.2	0.333333
[18,18.5[	18.25	11	0.183333	0.383333	0.366667
[18.5,19[	18.75	6	0.1	0.483333	0.2
[19,19.5[	19.25	9	0.15	0.633333	0.3
[19.5,20[	19.75	12	0.2	0.833333	0.4
[20,20.5[	20.25	6	0.1	0.933333	0.2
[20.5,21[	20.75	3	0.05	0.983333	0.1
[21,21.5]	21.25	1	0.016667	1	0.033333