# How to add a regression line in an Excel chart – Linear Regression

If you have worked with this program at some point, you will know that buying and downloading the Excel program is easy, and that what is really difficult is learning to use it and handle its functions perfectly, which can be the key to making any calculation work much easier. simpler.

However, due to all the facilities it offers, it is important to know how to handle it. Among its most favorable options, is that of making graphs and histograms in a simple way.

How to add a regression line in an EXCEL graph – Linear Regression

You may need it for many other types of charts or to add a particular feature to your chart. Particularly today, in Learn How to Do It we will teach you how to add a regression line in an Excel chart,  it will be very useful for you.

Index()

1. What is the regression line in an Excel chart for?
2. In which versions of Excel can I add a trend line to a graph?
3. What type of graph should I use to be able to add a regression line?
4. How can I predict values ​​with the help of the trend line?
5. How do I get the equation and R value with a regression line?
6. How can I change the design of a trend line?

What is the regression line in an Excel chart for?

Regression lines are used in Excel charts to represent a linear relationship between two variables , where one is independent and the other dependent.

In which versions of Excel can I add a trend line to a graph?

The Excel tool has enjoyed different renovations since its launch, improving its functions and adding new ones in each version. An example of this are the trend lines, which are used to connect price points within the graphs and can be added from the 2010 version of Excel.

What type of graph should I use to be able to add a regression line?

In order for the option to add a regression line to appear in Excel graphs and you can export it properly , it is necessary that the graph have certain characteristics.

It must be a scatterplot, for which you will have to work with a matrix with at least two columns of data included, also, when selecting the regression plot to add a line, you must make sure that the data is what you intend to use. In the options window that appears you will have to select the regression graph to add a line.

To use a scatterplot, go to the insert section on the toolbar , click on Scatter, and in the pop-up options window select the appropriate one for the job you are doing.

How can I predict values ​​with the help of the trend line?

Predicting values ​​with the help of Excel’s trend line is as easy as using the fill handle of this spreadsheet. You must start by selecting with the fill handle the cells that contain the initial values ​​of the trend series in question.

Note that you can select two of these cells to do this procedure, but selecting more may result in greater precision in the trend series .

The type of value you’re looking for tells you which direction to drag the fill handle from now on. If you want increasing values, you will drag it to the right, but if you want decreasing values, you should drag it to the left.

Now, to predict the values, release the controller and click to drop down the menu and select on growing trend to have Excel automatically calculate the trend line values. Also, remember that if you messed up placing the data, you have some that you want to swap between rows and columns .

How do I get the equation and R value with a regression line?

When you have the matrix with the data that you will use to add the regression line to the Excel scatter plot, you will have to place the mouse over a point on the graph and click on it with the right button.

In the options window that appears you will have to select add trend line and make sure that linear is checked. Then you must go to the bottom of the screen and check the options to present equation in the graph and present the value of R squared in the graph, and thus both will appear in the graph of the regression line.

How can I change the design of a trend line?

To change the design of a trend line, we go back to the toolbar in the Insert section and in the Dispersion option . As we have said, the trend line designs that can be chosen when inserting the graph will appear on it.

Likewise, by clicking at the end of this pop-up menu, on the button for all types of graphs , you will be able to make all the settings for the scatter graph and the trend line in which you are working.

##### byAbdullah Sam
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