Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[6.5,7[	6.75	21	0.35	0.35	0.7
[7,7.5[	7.25	22	0.366667	0.716667	0.733333
[7.5,8[	7.75	8	0.133333	0.85	0.266667
[8,8.5]	8.25	9	0.15	1	0.3