Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[20.8,21[	20.9	1	0.013889	0.013889	0.069444
[21,21.2[	21.1	6	0.083333	0.097222	0.416667
[21.2,21.4[	21.3	6	0.083333	0.180556	0.416667
[21.4,21.6[	21.5	2	0.027778	0.208333	0.138889
[21.6,21.8[	21.7	7	0.097222	0.305556	0.486111
[21.8,22[	21.9	6	0.083333	0.388889	0.416667
[22,22.2[	22.1	25	0.347222	0.736111	1.736111
[22.2,22.4[	22.3	15	0.208333	0.944444	1.041667
[22.4,22.6]	22.5	4	0.055556	1	0.277778