Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[450,500[	475	7	0.116667	0.116667	0.002333
[500,550[	525	11	0.183333	0.3	0.003667
[550,600[	575	9	0.15	0.45	0.003
[600,650[	625	21	0.35	0.8	0.007
[650,700[	675	9	0.15	0.95	0.003
[700,750]	725	3	0.05	1	0.001