Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[360,380[	370	13	0.180556	0.180556	0.009028
[380,400[	390	25	0.347222	0.527778	0.017361
[400,420[	410	12	0.166667	0.694444	0.008333
[420,440[	430	13	0.180556	0.875	0.009028
[440,460]	450	9	0.125	1	0.00625