Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[9,10[	9.5	22	0.305556	0.305556	0.305556
[10,11[	10.5	28	0.388889	0.694444	0.388889
[11,12]	11.5	22	0.305556	1	0.305556