Display trend
In two-dimensional charts, you can display the trend of a displayed measure. The development of the measure values is displayed as a line.
Procedure. Procedure
Display the Base tab bar.
Click
Display options.Display the Chart settings/Labels page.
Enable the Display trendline option.
Click OK.
The trendline is displayed in the chart.
If more than one measure of the same data type is displayed you can specify the measure for which the trend line is to be shown. You can set properties for the trend display by clicking the Format trendline button next to the Display trendline option.