Least Squares Regression Calculator

Best-fit polynomial

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Data (x,y;x,y;...)

Degree

R²

0.996375

SS_res = 0.116762

Coefficients

c0 (x⁰)1.047619

c1 (x^1)1.354286

Residuals

x=0.0y=1.00ŷ=1.05ε=-0.048

x=1.0y=2.50ŷ=2.40ε=0.098

x=2.0y=3.80ŷ=3.76ε=0.044

x=3.0y=5.10ŷ=5.11ε=-0.010

x=4.0y=6.20ŷ=6.46ε=-0.265

x=5.0y=8.00ŷ=7.82ε=0.181

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About Least Squares Regression Calculator

A least squares regression calculator supporting polynomial fits of degree 1-4. Enter data points, choose degree, get best-fit coefficients. Shows R², sum of squared residuals, and individual residuals. Compare fits visually. All calculations are client-side. Essential for data analysis and statistics.

Least Squares Regression Calculator Features

Degree 1-4
R²
Residuals
Coefficients
Data input

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