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Adding a trendline (fit) in a chart

  1. Create the chart and higlight it by clicking anywhere on the chart.
  2. Pull down the Chart menu on the menu bar and select the Add Trendline option.
  3. Select the type of trendline you want to add. Click the Options tab and select the Display equation on chart and Display R-squared on chart options. Then hit OK.
  4. The trendline will appear on the chart. By clicking the displayed equation of the trendline you are able to change the format, for example the number of digits dsplayed.