Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[18,20[	19	1	0.011905	0.011905	0.005952
[20,22[	21	17	0.202381	0.214286	0.10119
[22,24[	23	24	0.285714	0.5	0.142857
[24,26[	25	30	0.357143	0.857143	0.178571
[26,28]	27	12	0.142857	1	0.071429