Absolute vs. Relative Frequency
You also have the choice of plotting the relative or the absolute frequency along the y-axis. The relative frequency is better for large samples. The shape of the graphs, however, is the same for both methods.
Figure 6
Absolute Frequency of Serum Glucose Levels in 130 Hospital Employees
Figure 7
Relative Frequency of Serum Glucose Levels in 130 Hospital Employees
