Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[10,20[	15	5	0.059524	0.059524	0.005952
[20,30[	25	36	0.428571	0.488095	0.042857
[30,40[	35	13	0.154762	0.642857	0.015476
[40,50[	45	9	0.107143	0.75	0.010714
[50,60[	55	6	0.071429	0.821429	0.007143
[60,70[	65	7	0.083333	0.904762	0.008333
[70,80[	75	7	0.083333	0.988095	0.008333
[80,90]	85	1	0.011905	1	0.00119