Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[220,240[	230	6	0.008345	0.008345	0.000417
[240,260[	250	115	0.159944	0.168289	0.007997
[260,280[	270	104	0.144645	0.312935	0.007232
[280,300[	290	150	0.208623	0.521558	0.010431
[300,320[	310	86	0.119611	0.641168	0.005981
[320,340[	330	90	0.125174	0.766342	0.006259
[340,360[	350	72	0.100139	0.866481	0.005007
[360,380[	370	28	0.038943	0.905424	0.001947
[380,400[	390	22	0.030598	0.936022	0.00153
[400,420[	410	20	0.027816	0.963839	0.001391
[420,440[	430	10	0.013908	0.977747	0.000695
[440,460[	450	10	0.013908	0.991655	0.000695
[460,480]	470	6	0.008345	1	0.000417