To show the relationship between two data sets using ordered pairs plotted in a coordinate plane
Now, we want to choose an appropriate data display for the following situation.
The population of the United States divided into age groups
Here we want to present the frequency which is the number of people that fall into a specific category — the age group. This means that we could use a bar graph or a histogram. Remember that, for a histogram, the age groups should be expressed as intervals of the same size. The bar graph for this situation could look like the following.
