Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[9,10[	9.5	4	0.054795	0.054795	0.054795
[10,11[	10.5	25	0.342466	0.39726	0.342466
[11,12[	11.5	4	0.054795	0.452055	0.054795
[12,13[	12.5	1	0.013699	0.465753	0.013699
[13,14[	13.5	2	0.027397	0.493151	0.027397
[14,15[	14.5	4	0.054795	0.547945	0.054795
[15,16[	15.5	11	0.150685	0.69863	0.150685
[16,17[	16.5	5	0.068493	0.767123	0.068493
[17,18[	17.5	4	0.054795	0.821918	0.054795
[18,19[	18.5	5	0.068493	0.890411	0.068493
[19,20[	19.5	5	0.068493	0.958904	0.068493
[20,21]	20.5	3	0.041096	1	0.041096