Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[8,9[	8.5	1	0.005917	0.005917	0.006329
[9,10[	9.5	1	0.005917	0.011834	0.006329
[10,11[	10.5	6	0.035503	0.047337	0.037975
[11,12[	11.5	9	0.053254	0.100592	0.056962
[12,13[	12.5	15	0.088757	0.189349	0.094937
[13,14[	13.5	33	0.195266	0.384615	0.208861
[14,15[	14.5	29	0.171598	0.556213	0.183544
[15,16[	15.5	29	0.171598	0.727811	0.183544
[16,17[	16.5	13	0.076923	0.804734	0.082278
[17,18[	17.5	14	0.08284	0.887574	0.088608
[18,19]	18.5	8	0.047337	0.934911	0.050633