Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[40,50[	45	1	0.013889	0.013889	0.001389
[50,60[	55	0	0	0.013889	0
[60,70[	65	2	0.027778	0.041667	0.002778
[70,80[	75	7	0.097222	0.138889	0.009722
[80,90[	85	13	0.180556	0.319444	0.018056
[90,100[	95	14	0.194444	0.513889	0.019444
[100,110[	105	17	0.236111	0.75	0.023611
[110,120[	115	14	0.194444	0.944444	0.019444
[120,130[	125	3	0.041667	0.986111	0.004167
[130,140[	135	1	0.013889	1	0.001389