# Linear Regression Calculator

> Calculate the simple linear regression line from paired x and y values. Returns slope, intercept, the equation y = mx + b, r, r squared, and an optional predicted y.

**URL:** https://www.calculatoranswers.com/linear-regression-calculator
**Category:** Education

## Quick Answer

Find the line of best fit for your data points. Enter your coordinate pairs to calculate the linear regression equation and regression metrics.

## Definition

A linear regression calculator is a statistical analysis tool that models the relationship between an independent variable and a dependent variable. The calculator processes a set of data pairs to compute the line of best fit using the least squares method, outputting the regression equation in the form y equals ax plus b. It also calculates the correlation coefficient, the coefficient of determination (R-squared), and residuals. Data analysts and researchers use this tool to predict future trends and verify mathematical models.

## How to Use

1. **Enter data coordinates** — Input the independent (X) and dependent (Y) data points in the provided fields.
2. **Compute the regression** — Click the calculate button to perform the least squares regression analysis.
3. **Read the equation** — View the regression equation, slope, y-intercept, and R-squared value.

## Disclaimer

This calculator provides estimates for educational and planning purposes. Always consult a qualified professional for specific advice on financial, medical, legal, or other regulated decisions.

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