Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[16,17[	16.5	20	0.238095	0.238095	0.238095
[17,18[	17.5	30	0.357143	0.595238	0.357143
[18,19[	18.5	26	0.309524	0.904762	0.309524
[19,20]	19.5	8	0.095238	1	0.095238