What is the Linear Regression Calculator?
Paste pairs of x and y values and the tool fits the least-squares straight line y = mx + b. It shows the slope, intercept, correlation r, R² and standard error, draws a scatter plot with the trend line, and predicts y for any x you type.
How to use the Linear Regression Calculator
- Enter data as x, y pairs – one pair per line.
- Enter an x value to predict y.
- Read the equation and the chart.
What does R² mean?
The share of the variation in y explained by the line. 1 is a perfect fit, 0 means no linear relation.
This Linear Regression Calculator is 100% free, needs no signup and runs privately in your browser – on phone, tablet or computer.
Last updated: · By NodifyTech