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How to Add and Customize a Trendline on a Chart in Google Sheets

Key Takeaways 
  • Trendlines are useful for highlighting patterns in data on specific charts, including bar, line, column, or scatter charts.
  • You must first insert a chart in Google Sheets to add a trendline.
  • You can add a trendline by double-clicking the chart and then clicking the Customize tab in the Chart editor.

How to Add a Trendlline in Google Sheets

The purpose of a trendline is to highlight the patterns in data. They are useful parts of certain charts on Google Sheets. So, you must first insert a chart in Google Sheets to insert a trendline. We show you the steps below.

Adding the Chart

Step 1: Open Google Sheets in your preferred web browser.

Step 2: Create a new workbook and enter your dataset for the chart or open an existing workbook with the dataset.

Step 3: Select the cells you would like to include in your chart.

Selecting text for your chart

Step 4: Click the Insert menu at the top and select Chart from the context menu. This will launch a Chart editor on the right of your spreadsheet.

Inserting a Chart

Step 5: Click the drop-down beneath the Chart type on the chart editor.

Chart editor dropdown

Step 6: Select your preferred chart type from the chart editor. You can add trendlines to a bar, line, column, or scatter chart.

Selecting your preferred chart type

Adding the Trendline

After you insert your preferred chart type into Google Sheets, here’s how you can add a trendline to it:

Step 1: Double-click the chart you want to add the trendline to. This will launch the Chart editor on the right side of your spreadsheet.

Step 2: At the top of the chart editor, click the Customize tab.

Chart Customize tab

Step 3: Select the Series drop-drown.

Chart Series drop-drown

Step 4: Tick the box beside Trendline. You will see a line appear in your chart.

Trendline checkbox

Now, you should see the trendline appear on your chart.

how to add customize trendline in google sheets 10

How to Customize a Trendline in Google Sheets

After adding the trendline to your chart, you can make changes to its appearance to customize how it appears in Google Sheets. Here’s how to do so:

Step 1: Under the Trendline box, you will see Type. Click the drop-down beneath Type to choose your trendline’s form from the following options:

  • Linear: best for data that flows in a straight pattern
  • Exponential: for data that rises and falls proportional to a value
  • Polynomial: for data that has a varied pattern
  • Logarithmic: for data that falls or rises and then flattens out
  • Power Series: for data that falls or rises proportionally to its current value at a uniform rate.
  • Moving Average: for data that is unstable
Trendline type on Google Sheets

Step 2: Click the drop-down beneath the Line color to choose a trendline color from the palette.

Line color for your trendline

Step 3: Click the drop-down beneath Line opacity to customize the trendline’s visibility on the chart. You can choose from options between 0% and 100% opacity.

Line opacity for your trendline

Step 4: Click the drop-down beneath Line thickness to customize the thickness of the trendline. You can choose from 1px, 2px, 4px, or 8px.

Line thickness for your trendline

Step 5: Click the Label drop-down to add a label to your trendline. You can choose between a Custom label or an Equation label.

Choosing the trendline label

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Last updated on 08 July, 2024

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