How to Find Least Squares Regression Line in Excel: A Simple GuideUpdated 22 days ago
Finding the Least Squares Regression Line in Excel is a straightforward process using the built-in Trendline feature in charts or the LINEST function. First, enter your X and Y data points into two separate columns.
Key Highlights: Find the Least Squares Regression Line in Excel
- Using the Trendline Feature:
Create a scatter plot of your data. Add a Linear Trendline to the chart. Display the equation of the regression line and R² value on the chart.
- Using SLOPE and INTERCEPT Functions:
Use the SLOPE function to calculate the slope of the line. Use the INTERCEPT function to calculate the y-intercept. Combine both to form the regression equation: y = mx + b.
- Using the LINEST Function:
The LINEST function provides detailed regression statistics, including slope, intercept, and additional measures like the R² value. Enter the formula and use Ctrl + Shift + Enter for array output.
- Using Data Analysis Toolpak:
Enable the Data Analysis Toolpak in Excel. Use the Regression tool to get a comprehensive output, including the regression equation, R², p-value, and more.
These methods enable you to find and interpret the least squares regression line in Excel for data analysis and forecasting purposes.