Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[250,300[	275	3	0.041667	0.041667	0.000833
[300,350[	325	8	0.111111	0.152778	0.002222
[350,400[	375	15	0.208333	0.361111	0.004167
[400,450[	425	21	0.291667	0.652778	0.005833
[450,500[	475	10	0.138889	0.791667	0.002778
[500,550[	525	10	0.138889	0.930556	0.002778
[550,600[	575	1	0.013889	0.944444	0.000278
[600,650[	625	2	0.027778	0.972222	0.000556
[650,700[	675	1	0.013889	0.986111	0.000278
[700,750]	725	1	0.013889	1	0.000278