Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[20.6,20.8[	20.7	9	0.1125	0.1125	0.5625
[20.8,21[	20.9	13	0.1625	0.275	0.8125
[21,21.2[	21.1	7	0.0875	0.3625	0.4375
[21.2,21.4[	21.3	5	0.0625	0.425	0.3125
[21.4,21.6[	21.5	19	0.2375	0.6625	1.1875
[21.6,21.8[	21.7	6	0.075	0.7375	0.375
[21.8,22[	21.9	6	0.075	0.8125	0.375
[22,22.2[	22.1	13	0.1625	0.975	0.8125
[22.2,22.4]	22.3	2	0.025	1	0.125