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# How to add a trend line to a histogram, Add Trend Lines to a Visualization

It is usually more curved on one side.

Polynomial — It is a curved line that should be used when data fluctuates more than one rise and fall. You can change the color, transparency, width, dash type, compound type, cap type, and more for your trendline.

### How to Add a TrendLine in Excel Charts (Step-by-Step Guide)

In the example below, you want to change the color of the trendline to blue, increase the width to 2. Use Trendline to Forecast Future Data In Excel, you can extend your data and project the data trend into the future or past using the features of Trendline.

The resulting graph must look something like this: Step 2: Mark the Midpoints of Each Bar in the Histogram on Your Chart Before you proceed to sketch or insert a curved line graph on this chart, you must mark the midpoints of each bar in the frequency distribution like this: These mid points can be drawn manually if you are displaying your information on a hard copy chart. If you are working with Excel or Word, you may skip this step. Step 3: Join the Midpoints and Draw a Curved Line Graph on the Chart If you are working on a physical drawing, it is time to take out your artistic guns! Using a sharp pencil, join each midpoint with the next one, starting from the very first bar in the histogram. The end result should look something like this: And there you have it!

In this example, you want to forecast sales for the next 6 periods. Follow the steps below to understand how to forecast data trends. Your project data trend for the next 6 periods is created.

You can use trendline to extrapolate the trend of the data into the past. Simply type the period in the backward box instead of the forward box. Add multiple trendline to same chart Until now, you have learned how to add trendline in Excel.

But you can add multiple trendlines to the same chart. Say, you want to add both linear and moving average trendline to the existing data.

### Add Trend Lines to a Visualization

Add the first linear trendline as discussed above and then follow the steps below to add another trendline. Excel will show both the trendlines on the same chart.

Power Moving Average Here is a good article that explains what these trend lines are and when to use these. To select any of these other variations.

How to remove trendline in Excel Removing the trendline in Excel Chart is extremely easy and a quick process. Or, you could simply right click on the trendline and click on delete.

Conclusion In this tutorial, you have covered how to add trendline in Excel, the different types of trendlines, formatting the trendline, extending the trendline into future or past periods, adding multiple trendlines to the same chart, and finally how to remove them.

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