How to Add a Chart to an Existing PowerPoint 2007 Slide
Open the Insert tab on the Ribbon. Click Chart in the Illustrations group.
The Create Chart dialog box opens.
Select the type of chart you want to create and then click OK.
PowerPoint launches Excel (if it isn’t already running) and inserts a chart based on sample data.
Set the chart layout and style.
You can choose different styles until you find just the perfect one.
The chart is likely to fall on top of something already on the slide. Resize the chart by selecting it and then dragging it by the love handles. You can move the chart like any other object: Just click and drag it to a new location. You might also need to move, resize, or delete other objects to make room for the chart or change the layer order of the chart or other surrounding objects.