Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[150,160[	155	3	0.05	0.05	0.005
[160,170[	165	5	0.083333	0.133333	0.008333
[170,180[	175	3	0.05	0.183333	0.005
[180,190[	185	12	0.2	0.383333	0.02
[190,200[	195	12	0.2	0.583333	0.02
[200,210[	205	10	0.166667	0.75	0.016667
[210,220[	215	9	0.15	0.9	0.015
[220,230]	225	6	0.1	1	0.01