If you are looking for **how to add a regression line to scatter plot in Excel**, then you are in the right place. In statistics, a regression line is a line that best describes the behavior of a set of data. In other words, itâ€™s a line that best fits the trends of a given data. The purpose of this line is to describe the interrelation between a dependent variable and an independent variable. In this article, weâ€™ll try to discuss how to add a regression line to a **scatter plot in Excel**.

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## 3 Steps to Add Regression Line to Scatter Plot in Excel

In a scatter plot we can add various types of lines like a **vertical line**, **horizontal line**, or line with a slope. But eventually, here weâ€™ll try to add a regression line to the scatter plot. Firstly, to do this, we have made a dataset named **Dataset for Adding ****Regression Line**. The dataset has **GDP Growth Rate (%), Year**, and **Stock Value** in *USD* In **Columns B**,** C**, and **D** respectively of one of the arbitrary regions of California state. The dataset is like this.

### 1. Creation of a Scatter Plot to Add Regression Line to Scatter Plot

Here, weâ€™ll try to add a regression line relating **Year** with **Stock Value**. To do this our first step is to create a scatter plot according to the dataset. Weâ€™ll use **Columns C** and** D** to do this.

After selecting those columns, go to the **Insert** Tab > **Scatter** Dropdown > select the first option according to the picture below.

Then, weâ€™ll have the scatter plot like this.

**Read More:** **How to Add Line to Scatter Plot in Excel (3 Practical Examples)**

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### 2. Addition of a Regression Line

In this step, weâ€™ll use the following dataset to add a regression line to the scatter plot.

After finishing the first step, here, firstly, weâ€™ll select the chart > click on the **Chart Elements **icon > select **Trendline **option and put tick mark.

Secondly, weâ€™ll have our regression line like this.

**Read More: ****How to Make a Correlation Scatter Plot in Excel (2 Quick Methods)**

### 3. Add a Regression Line Equation and then Forecast for Any Values

In this step, weâ€™ll add a regression line equation and add a forecast in the scatter plot using the following dataset of **Adding Regression Line Equation and Forecasting**.

After finishing the second step, here, firstly, weâ€™ll select the arrow mark in the **Trendline** option shown below.

Secondly, select **More Options.**

A **Format Trendline** window will appear like the picture below.

Thirdly, select the icon shown below.

As a result, the **Trendline Options **will be visible now.

To add a regression line equation between those two variables, select and tick the **Display Equation on Chart** option like the picture below.

Suppose, we want to assume the stock amount of **10** years later i.e. we want to forecast.

To do this, put **10** in the** Forward** option of the **Forecast** bar.

Finally, weâ€™ll have an equation like this.

`y = 70.659x - 140227`

This equation is in the form of.

`y = mx + c`

Where,**m** = slope of the equation which is here **70.659**

**c**= constant which is here

**-140227**

We can find any **Stock Amount **which is **y** by putting only the **Year** which is **x** in this equation and also can forecast.

Additionally, we have got the extended line to forecast in the year **2031** i.e. **10** years later than the year **2021**.

Letâ€™s calculate it with the equation. Putting **2031** as** x** in the above equation we get.

**y = 70.659*2031 â€“ 140227**

**y = 3,281.429**

So, our forecasted stock value in the year **2031** will be **3,281.429** **USD**.

**Read More: ****How to Create a Scatter Plot in Excel with 2 Variables**

## Things to Remember

- We can format our regression line according to the requirement with the help of iron bars placed upper-right side corner of the plot.

## Conclusion

We can add any regression line to a scatter plot if we study this article properly. Please feel free to visit our official Excel learning platform **Exceldemy** for further queries.

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