Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[220,240[	230	3	0.008333	0.008333	0.000417
[240,260[	250	58	0.161111	0.169444	0.008056
[260,280[	270	52	0.144444	0.313889	0.007222
[280,300[	290	75	0.208333	0.522222	0.010417
[300,320[	310	43	0.119444	0.641667	0.005972
[320,340[	330	45	0.125	0.766667	0.00625
[340,360[	350	36	0.1	0.866667	0.005
[360,380[	370	14	0.038889	0.905556	0.001944
[380,400[	390	11	0.030556	0.936111	0.001528
[400,420[	410	10	0.027778	0.963889	0.001389
[420,440[	430	5	0.013889	0.977778	0.000694
[440,460[	450	5	0.013889	0.991667	0.000694
[460,480]	470	3	0.008333	1	0.000417