![]() ![]() You can calculate the slope and y-intercept using the following equations: x = the independent variable (the variable that you are using to predict the dependent variable).y = the dependent variable (the variable that you are trying to predict).Once you have these values, you can use the following equation: To do this, youll need to know the x-values and y-values of your data set. ![]() Then, youll need to calculate the trendline equation yourself. ![]() First, youll need to select the data set that you want to add the trendline to. How to Add a Trendline in Excel ManuallyĪdding a trendline in Excel manually is a simple process. In this article, well show you how to add a trendline in Excel step-by-step. In Excel, you can add a trendline to a data set either manually or using the built-in trendline feature. They are often used in financial analysis to predict future events. A trendline is a line drawn on a graph to show the general direction that a data set is moving. ![]()
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