Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[70,80[	75	8	0.1	0.1	0.01
[80,90[	85	22	0.275	0.375	0.0275
[90,100[	95	14	0.175	0.55	0.0175
[100,110[	105	5	0.0625	0.6125	0.00625
[110,120[	115	6	0.075	0.6875	0.0075
[120,130[	125	7	0.0875	0.775	0.00875
[130,140[	135	6	0.075	0.85	0.0075
[140,150[	145	12	0.15	1	0.015