Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[80,100[	90	3	0.035714	0.035714	0.001786
[100,120[	110	16	0.190476	0.22619	0.009524
[120,140[	130	23	0.27381	0.5	0.01369
[140,160[	150	14	0.166667	0.666667	0.008333
[160,180]	170	28	0.333333	1	0.016667