Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[14,15[	14.5	5	0.108696	0.108696	0.108696
[15,16[	15.5	3	0.065217	0.173913	0.065217
[16,17[	16.5	3	0.065217	0.23913	0.065217
[17,18[	17.5	7	0.152174	0.391304	0.152174
[18,19[	18.5	11	0.23913	0.630435	0.23913
[19,20[	19.5	6	0.130435	0.76087	0.130435
[20,21[	20.5	4	0.086957	0.847826	0.086957
[21,22]	21.5	7	0.152174	1	0.152174