Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[29.5,30[	29.75	17	0.236111	0.236111	0.472222
[30,30.5[	30.25	10	0.138889	0.375	0.277778
[30.5,31[	30.75	36	0.5	0.875	1
[31,31.5]	31.25	9	0.125	1	0.25