To base a trendline on numeric x values, you should use an xy (scatter) chart.Įxcel automatically assigns a name to the trendline, but you can change it. This assumption is made whether the x-values are numeric or text.
If you add a trendline to a line, column, area, or bar chart, the trendline is calculated based on the assumption that the x values are 1, 2, 3, 4, 5, 6, etc. To get the result that you want, you might have to sort the x values before you add a moving average. If you add a moving average to an xy (scatter) chart, the moving average is based on the order of the x values plotted in the chart. If you select Moving Average, type the number of periods that you want to use to calculate the moving average in the Period box. If you select Polynomial, type the highest power for the independent variable in the Order box. For logarithmic, power, and exponential trendlines, Excel uses a transformed regression model. Note: The R-squared value that you can display with a trendline is not an adjusted R-squared value. In the Format Trendline pane, under Trendline Options, select Moving Average. You can format your trendline to a moving average line. Set a value in the Forward and Backward fields to project your data into the future. Formatting a trendline is a statistical way to measure data: In the Format Trendline pane, select a Trendline Option to choose the trendline you want for your chart. On the Format tab, in the Current Selection group, select the trendline option in the dropdown list.
In the Add Trendline dialog box, select any data series options you want, and click OK. Note: Excel displays the Trendline option only if you select a chart that has more than one data series without selecting a data series.
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