Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[70,80[	75	5	0.069444	0.069444	0.006944
[80,90[	85	10	0.138889	0.208333	0.013889
[90,100[	95	10	0.138889	0.347222	0.013889
[100,110[	105	10	0.138889	0.486111	0.013889
[110,120[	115	10	0.138889	0.625	0.013889
[120,130[	125	10	0.138889	0.763889	0.013889
[130,140[	135	10	0.138889	0.902778	0.013889
[140,150]	145	7	0.097222	1	0.009722