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	44	0.122222	0.644444	0.006111
]320,340]	330	44	0.122222	0.766667	0.006111
]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