Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[20,21[	20.5	5	0.029762	0.029762	0.029762
[21,22[	21.5	14	0.083333	0.113095	0.083333
[22,23[	22.5	15	0.089286	0.202381	0.089286
[23,24[	23.5	25	0.14881	0.35119	0.14881
[24,25[	24.5	26	0.154762	0.505952	0.154762
[25,26[	25.5	19	0.113095	0.619048	0.113095
[26,27[	26.5	29	0.172619	0.791667	0.172619
[27,28[	27.5	14	0.083333	0.875	0.083333
[28,29[	28.5	15	0.089286	0.964286	0.089286
[29,30]	29.5	6	0.035714	1	0.035714