35 We could show this data in a bar chart, but it would have a lot of bars! We can group them together so that we have fewer categories. When choosing intervals for the data sets make sure that ...

A line graph shows how data changes over time. For example, how the volume of traffic changes over a day so you can see the busiest times. A bar chart is best for comparing groups of data.

Either way, you do not need any third-party add-on. After inserting the graph, right-click on the blue line, and select the Format Data Series option. On your right side, you should see a panel ...