To add more data to the Y axis in a line chart, add additional numbers in cells below your existing data. Right-click the chart, choose "Select Data" and highlight all entries in the single column.

Creating a One-Sided Graph Two-sided graphs start with a normal, one-sided graph. By selecting all three columns of data, you can select the type of chart from Excel's Insert tab.

By using Excel or Google Sheets to create impactful graphs, you'll be able to captivate your audience, facilitate meaningful discussions, and drive home the key points of your presentation.

We discuss a comment on a previous post stating that the text of labels on the vertical axis of graphs must be horizontal by discussing the pros and cons of four possible positions for these labels.