Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[5,10[	7.5	4	0.024691	0.024691	0.008163
[10,15[	12.5	17	0.104938	0.12963	0.034694
[15,20[	17.5	45	0.277778	0.407407	0.091837
[20,25[	22.5	28	0.17284	0.580247	0.057143
[25,30]	27.5	4	0.024691	0.604938	0.008163