<human>:  How do I add a best fit line to a chart in Excel?
<bot>: Add a Best Fit Line in Excel
1. Highlight the data for your chart.
2. Click the Insert tab.
3. Click the Scatter icon.
4. Click the first Scatter chart.
5. Right-click one of the data points on the chart.
6. Click Add Trendline.
7. Select "Linear."
8. Check the box next to "Display equation on chart."