Excel automatically distributes these points along a uniform X axis. To add more data to the Y axis in a line chart, add additional numbers in cells below your existing data.

How to Add Notes to an Excel Chart. Microsoft Excel's quick-format chart and graph features offer a way to instantly convert your data-filled cells into a visual representation such as a pie chart ...

At this point, we could insert a map (chart) based on the existing data set, but let’s add some custom values instead. Suppose you want a map that shows how many stores are in each county.

In Microsoft Excel, to draw attention to a specific marker in a line chart, drop in a thin line, think of it as a marker.