Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[13.5,14[	13.75	3	0.041667	0.041667	0.083333
[14,14.5[	14.25	9	0.125	0.166667	0.25
[14.5,15[	14.75	0	0	0.166667	0
[15,15.5[	15.25	0	0	0.166667	0
[15.5,16[	15.75	13	0.180556	0.347222	0.361111
[16,16.5[	16.25	17	0.236111	0.583333	0.472222
[16.5,17[	16.75	15	0.208333	0.791667	0.416667
[17,17.5[	17.25	5	0.069444	0.861111	0.138889
[17.5,18]	17.75	10	0.138889	1	0.277778