Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[18,20[	19	4	0.363636	0.363636	0.181818
[20,22[	21	1	0.090909	0.454545	0.045455
[22,24[	23	0	0	0.454545	0
[24,26[	25	0	0	0.454545	0
[26,28[	27	3	0.272727	0.727273	0.136364
[28,30[	29	1	0.090909	0.818182	0.045455
[30,32]	31	2	0.181818	1	0.090909