Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[17.5,18[	17.75	1	0.012658	0.012658	0.025316
[18,18.5[	18.25	5	0.063291	0.075949	0.126582
[18.5,19[	18.75	13	0.164557	0.240506	0.329114
[19,19.5[	19.25	13	0.164557	0.405063	0.329114
[19.5,20[	19.75	15	0.189873	0.594937	0.379747
[20,20.5[	20.25	16	0.202532	0.797468	0.405063
[20.5,21[	20.75	2	0.025316	0.822785	0.050633
[21,21.5[	21.25	2	0.025316	0.848101	0.050633
[21.5,22[	21.75	4	0.050633	0.898734	0.101266
[22,22.5[	22.25	2	0.025316	0.924051	0.050633
[22.5,23[	22.75	4	0.050633	0.974684	0.101266
[23,23.5]	23.25	2	0.025316	1	0.050633