Frequency Table (Histogram)
Bins	Midpoint	Abs. Frequency	Rel. Frequency	Cumul. Rel. Freq.	Density
[66,67[	66.5	1	0.013699	0.013699	0.013699
[67,68[	67.5	15	0.205479	0.219178	0.205479
[68,69[	68.5	3	0.041096	0.260274	0.041096
[69,70[	69.5	21	0.287671	0.547945	0.287671
[70,71[	70.5	13	0.178082	0.726027	0.178082
[71,72[	71.5	7	0.09589	0.821918	0.09589
[72,73[	72.5	5	0.068493	0.890411	0.068493
[73,74[	73.5	4	0.054795	0.945205	0.054795
[74,75[	74.5	2	0.027397	0.972603	0.027397
[75,76]	75.5	2	0.027397	1	0.027397