Linear Regression Calculator
Ordinary least squares regression line with equation string.
Limitation: Educational OLS—not weighted regression or robust fits.
How to Use the Linear Regression Calculator
Ordinary least squares regression line with equation string.
Open the Regression calculator and read field labels.
Match the mode
Educational OLS—not weighted regression or robust fits.
What It Calculates
Ordinary least squares regression line with equation string.
Worked Examples
Perfect line
Inputs
Result
Slope 2, intercept 0.
Noisy points
Inputs
Result
r and r² in details.
Constant X fails
Inputs
Result
Zero X variance.
Check your mode
Educational OLS—not weighted regression or robust fits.
Frequently Asked Questions
Still have questions about this calculation?
Try the CalculatorFormulas
Standard definitions with assumptions noted below.
Formula
Scientific Background
Standard statistics definitions with assumptions stated on-page. Educational only—not professional certification.
Sources & review
Linear Regression Calculator documents the references behind its formulas and assumptions. Always treat results as educational estimates, not personalized professional advice.
Last reviewed
July 22, 2026
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