Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[18,18.5[	18.25	6	0.071429	0.071429	0.142857
[18.5,19[	18.75	11	0.130952	0.202381	0.261905
[19,19.5[	19.25	15	0.178571	0.380952	0.357143
[19.5,20[	19.75	11	0.130952	0.511905	0.261905
[20,20.5[	20.25	15	0.178571	0.690476	0.357143
[20.5,21[	20.75	8	0.095238	0.785714	0.190476
[21,21.5[	21.25	6	0.071429	0.857143	0.142857
[21.5,22[	21.75	3	0.035714	0.892857	0.071429
[22,22.5[	22.25	3	0.035714	0.928571	0.071429
[22.5,23]	22.75	6	0.071429	1	0.142857