# Find the equation of the trend line. Finding the Equation of a Trend Line

Add a trendline You can add trendlines to see patterns in your charts. Before you create a trendline: You can add trendlines to bar, line, column, or scatter charts. On your computer, open a spreadsheet in Google Sheets.

Double-click a chart. At the right, click Customize Series.

Optional: Next to "Apply to," choose the data series you want to add the trendline to. Click Trendline. Under "Trendline," you can edit: Trendline types.

Line color, opacity, or thickness. R squared.

Excel trendline equation is wrong - reasons and fixes Excel trendline types When adding a trendline in Excel, you have 6 different options to choose from. Additionally, Microsoft Excel allows displaying a trendline equation and R-squared value in a chart: Trendline equation is a formula that finds a line that best fits the data points. R-squared value measures the trendline reliability - the nearer R2 is to 1, the better the trendline fits the data. Below, you will find a brief description of each trendline type with chart examples.

This shows how closely the trendline fits the data. This is only available if you add a legend. Polynomial degrees. This is only available for polynomial trendlines.

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Average types. This is only available for moving average trendlines. Linear: For data that closely follows a straight line.

Exponential: For data that rises and falls proportional to its current value. Polynomial: For data that varies.

Logarithmic: For data that rises or falls at a fast rate and then flattens out. Power series: For data that rises or falls proportional to its current value at the same rate.

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- Add a Trendline in Excel - Easy Excel Tutorial

Moving average: Helps smooth out data that is unstable or more variable. How can we improve it?