STEP 2:Click on the arrow next to Trendline STEP 1: Click on the Chart Elements ( “+” icon) on the top-right corner of the chart. Add the first linear trendline as discussed above and then follow the steps below to add another trendline. Say, you want to add both linear and moving average trendline to the existing data. But you can add multiple trendlines to the same chart. Until now, you have learned how to add trendline in Excel. Simply type the period in the backward box instead of the forward box. You can use trendline to extrapolate the trend of the data into the past. Your project data trend for the next 6 periods is created. STEP 3:Under forecast, type “6” in the forward box. STEP 2: Select the Trendline Options tab. STEP 1:Double click on the trendline to open the Format Trendline pane. Follow the steps below to understand how to forecast data trends. In this example, you want to forecast sales for the next 6 periods. In Excel, you can extend your data and project the data trend into the future or past using the features of Trendline. STEP 3:From the Format Trendline pane, click the Fill & Line category. Or, you can skip STEP 1 & 2 and simply double click on the trendline to open the Format Trendline pane. STEP 2:Select the Format Trendline option.

In the example below, you want to change the color of the trendline to blue, increase the width to 2.5, and change the dash type. You can change the color, transparency, width, dash type, compound type, cap type, and more for your trendline. Now that you know how to add trendline in Excel, let’s move forward to understand how to format them. Moving Average – It is used to smooth the extreme fluctuations of data and show a clearer direction to data trends.Polynomial – It is a curved line that should be used when data fluctuates more than one rise and fall.Logarithmic – This trendline should be used when the data increase/decrease quickly and then levels out.Exponential – It shows the increase/decrease in the value of data at an increasingly higher rate.Linear – It is a straight line that shows the increase/decrease in the value of data over time at a steady rate.There are different types of trendlines available to be added to the Excel Charts:

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