Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[18,19[	18.5	17	0.202381	0.202381	0.202381
[19,20[	19.5	26	0.309524	0.511905	0.309524
[20,21[	20.5	23	0.27381	0.785714	0.27381
[21,22[	21.5	9	0.107143	0.892857	0.107143
[22,23]	22.5	9	0.107143	1	0.107143