How to Create a Line of Best Fit in Google Sheets: A Step-by-Step Guide

Creating a line of best fit in Google Sheets is a straightforward task that involves selecting your data and adding a trendline to your scatter plot chart. After this quick process, you’ll have a visual representation of the relationship between your data points, which is useful for making predictions or understanding trends.

Step by Step Tutorial on How to Create a Line of Best Fit in Google Sheets

Before diving into the nitty-gritty, it’s important to know that creating a line of best fit, also known as a trendline, helps in identifying the direction of the data points in a scatter plot. Here’s how to create one in Google Sheets.

Step 1: Insert your data into Google Sheets

Input your data into two columns on a Google Sheet.

When inputting your data, ensure that your independent variable (the one you have control over) is in the first column, and your dependent variable (the one you measure) is in the second column.

Step 2: Highlight your data

Click and drag to highlight the cells that contain your data.

Ensure that you don’t include any headers or labels in your selection, as this can mess up the chart.

Step 3: Insert a chart

Click on ‘Insert’, then select ‘Chart’.

Google Sheets will automatically choose a chart that it thinks is best suited for your data. However, for a line of best fit, a scatter plot is most appropriate.

Step 4: Change chart type to Scatter plot

Click on ‘Chart editor’, then under ‘Chart type’ select ‘Scatter chart’.

The scatter plot chart is the best option for visualizing how two different data sets relate to each other.

Step 5: Add a trendline

In the ‘Chart editor’, go to ‘Series’ and then check the ‘Trendline’ box.

You can customize the trendline by changing its color, label, and line type in the same ‘Series’ section.

After following these steps, you’ll have a scatter plot chart with a line of best fit that clearly shows the trend of your data.

What Happens After You Create a Line of Best Fit in Google Sheets

Once you’ve created a line of best fit, you can use it to make predictions about your data. For example, if your scatter plot represents the relationship between study time and test scores, the line of best fit can help you estimate how much study time is needed to achieve a particular score. It’s an insightful tool for both statistics and forecasting.

Tips for Creating a Line of Best Fit in Google Sheets

  • Ensure your data is clean and organized before starting.
  • If you have outliers in your data, consider removing them as they can skew your line of best fit.
  • Use the ‘Customize’ tab in the ‘Chart editor’ to give your chart a title and label your axes.
  • You can copy the chart to paste into a report or presentation.
  • Always double-check your data ranges before creating the chart to avoid errors.

Frequently Asked Questions

What is a line of best fit?

A line of best fit is a straight line drawn through the center of a group of data points on a scatter plot. It shows the general direction of the data and can be used to make predictions.

Why is a line of best fit important?

It helps in understanding the strength and direction of the relationship between two variables, making it easier to analyze data and make predictions.

Can you add more than one line of best fit in Google Sheets?

Yes, you can add multiple trendlines if you have more than one series of data on the same scatter plot.

How do you interpret a line of best fit?

A line with a positive slope indicates a positive correlation between variables, while a negative slope indicates a negative correlation. A steeper slope suggests a stronger relationship.

What if my data doesn’t have any clear trends?

If there’s no clear trend, the line of best fit may be nearly flat. This indicates there’s little to no linear relationship between the variables.


  1. Insert your data into Google Sheets.
  2. Highlight your data.
  3. Insert a chart.
  4. Change chart type to Scatter plot.
  5. Add a trendline.


Mastering the art of creating a line of best fit in Google Sheets can elevate your data analysis skills to new heights. Whether you’re a student trying to crunch numbers for a science project, a marketer analyzing trends, or just someone looking to make sense of data, the ability to visually represent and interpret your data is invaluable. By following the simple steps outlined above, you’ll be able to draw insights and make predictions with ease. Remember, a line of best fit is more than just a line; it’s a story told by your data, a glimpse into the possible future trends, and a guide for strategic decision making. It’s a tool that, when used correctly, can give you a competitive edge in a data-driven world. So, go ahead and give it a try – your spreadsheet is waiting.

Join Our Free Newsletter

Featured guides and deals

You may opt out at any time. Read our Privacy Policy