how do you find the equation of a trendline in excel

Method 2: Getting The Trendline Equation From A Graph As a result the logic test within the if statement checks whether the gradient is less than 0 which avoids the situation where you have a positive sign and a negative sign sitting next to each other if the gradient is negative. If Function: The function is necessary within the formula to.allow.for both positive and negative intercepts within the formula. ie the number in bold could be adjusted: ROUND(INTERCEPT(B:B,A:A), 2) the number of decimal places required can be easily adjusted by adjusting the number it’s in the round function. Round Function: Rounds results of the slope and intercept functions 2 two decimal places in this example because otherwise, the formula produces a large number of decimal places. Intercept Function: Provides the y-intercept for the equation and has the same structure as slope.

In the example above I have opted to select the entire column in both cases because that means that the formula does not need to be adjusted even if additional data is added. Slope Function: Provides the slope or gradient of the line of best fit and its structure is Slope(Y values, X Values).

The equation required to do this is as follows The first methods listed in this article will provide an Excel equation that will automatically produce the equation of the line of best fit or trendline in excel provided that the X values are placed in column A of the sheet and the Y values are placed in column B. M = the gradient or slope of the line, andĬ = the y-intercept which is the value of why at the point at which the line crosses the y-axis Method 1 – Calculating The Equation In A Cell How to get the trendline equation in an excel graph can sometimes be challenging to get, however, in this article we will cover two methods that will allow you to get the trendline equation or line of best fit for some linear data.Īll lines can be described using the general linear equation listed below

How do you find the equation of a trendline in excel