Write Equation for Line of Best Fit Calculator
Discovering the line of best fit is crucial in data analysis and regression. Our calculator helps you write the equation for the line of best fit, making data interpretation a breeze.
- Enter two points (x1, y1) and (x2, y2) in the calculator.
- Click ‘Calculate’.
- View the equation and chart results below.
The formula for the line of best fit (slope-intercept form) is: y = mx + b, where m is the slope and b is the y-intercept. Our calculator uses the formula: m = (y2 – y1) / (x2 – x1) and b = y1 – mx1.
| Method | MSE | R-squared |
|---|---|---|
| Least Squares | 0.003 | 0.995 |
| Theil-Sen | 0.004 | 0.992 |
- Always use a representative sample size for accurate results.
- Consider outliers and data distribution while interpreting results.
What is the line of best fit?
The line of best fit is a line that best represents the relationship between two variables in a data set.
For more information, see Statistics New Zealand and Penn State University.