What is Regression Calculator?
Regression Calculator fits linear, quadratic, and polynomial curves to your data points. It computes coefficients, R² values, and standard errors, then plots the fitted curve alongside your data for visual analysis.
How to use
- Enter data points as X,Y pairs or paste from a spreadsheet.
- Select the regression type (linear, quadratic, polynomial) and degree.
- View the equation, R² statistic, residual plot, and download results.
Result
A researcher enters 20 temperature-vs-yield data points, selects quadratic regression, and gets y = -0.03x² + 4.2x - 12.5 with R² = 0.94, confirming a non-linear relationship.
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