A time graph is a line graph which shows you data that has been collected over a period of time. There is a title which tells you what the data in the time graph is about. The horizontal (X) and ...

For example, on this graph, the vertical axis goes up in steps of 2 degrees. Even though 7 degrees and 9 degrees are not shown, they are still represented between the labeled points.

How to create a Line Chart in Excel To create a line chart in Excel, the procedure is as follows: Select the data across both the columns (from A3 to B12). Go to Insert > Line Chart.