Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[80,90[	85	5	0.0625	0.0625	0.00625
[90,100[	95	15	0.1875	0.25	0.01875
[100,110[	105	20	0.25	0.5	0.025
[110,120[	115	17	0.2125	0.7125	0.02125
[120,130[	125	7	0.0875	0.8	0.00875
[130,140[	135	9	0.1125	0.9125	0.01125
[140,150[	145	4	0.05	0.9625	0.005
[150,160[	155	2	0.025	0.9875	0.0025
[160,170[	165	1	0.0125	1	0.00125