Each chart provides a legend, which is a visual reference to help you associate the chart objects to the parameters they represent.
Using the legend feature, you can perform the following actions:
Move your mouse pointer over a legend item or the legend color block to view more information about the parameters it represents.
Right-click the legend item to further investigate the item.
Click a pie or bar chart legend item to hide the item in the chart. Click the legend item again to show the hidden item. You can also click the corresponding graph item to hide and show the item.
Click Legend, or the arrow beside it, if you want to remove the legend from your chart display.