Yet such graphs do effectively show simple breakdowns. For example, a presentation's pie graph might compare the length of time that employees spend working compared with the entire day's length.

A line graph could be used to show the changes in a country's employment structure over time. This graph shows ... Climate graphs are an example of this. The x-axis shows the months of the year ...

For the time group (whose results are shown in the graph above), they covered much less distance when they were running for a specific amount of time rather than distance. Most of the difference ...