Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[60,80[	70	19	0.158333	0.158333	0.007917
[80,100[	90	11	0.091667	0.25	0.004583
[100,120[	110	12	0.1	0.35	0.005
[120,140[	130	17	0.141667	0.491667	0.007083
[140,160[	150	10	0.083333	0.575	0.004167
[160,180[	170	18	0.15	0.725	0.0075
[180,200[	190	28	0.233333	0.958333	0.011667
[200,220]	210	5	0.041667	1	0.002083