Excel automatically inserts the graph, but it has no labels. Review the new green "Chart Tools" tab and ribbon at the top of the screen. If you don't see them, click the chart to enable them.

How to Add an Overlay to Excel. Microsoft Excel 2010 can create a chart to illustrate numeric data from a worksheet. Excel's "Chart Tools" contain "Labels" that customize the chart area.

Displaying values on a map chart is more meaningful than handing someone a sheet of data. Thanks to Microsoft Excel's Geography data type, creating a map chart is easier than you might think.