Hi Karen53,

To change the line spacing in the legend of your chart, you will need to adjust the font size of the legend. Here are the steps to do so:

1. Click on the legend in your chart to select it.
2. Right-click on the legend and select "Format Legend" from the drop-down menu.
3. In the "Format Legend" pane that appears on the right-hand side of the screen, click on the "Font" tab.
4. In the "Font" tab, you will see options for font style, size, color, and effects. To adjust the line spacing, you will need to adjust the font size.
5. Decrease the font size until the legend is single spaced. You may need to experiment with different font sizes to get the desired spacing.