What is the Residual Calculator?

The Residual Calculator is a statistical tool that helps users calculate the differences between observed values and predicted values in a dataset. By entering a series of X (independent) and Y (dependent) values, the calculator computes the predicted Y values, residuals, and displays the sum and average of the residuals. This is useful for analyzing the accuracy of regression models, detecting patterns, and improving predictions.

How to Use:

1. Enter X Values (comma-separated): Input the independent variable data points, e.g., 1, 2, 3, 4, 5.
2. Enter Y Values (comma-separated): Input the dependent variable data points corresponding to each X, e.g., 2, 4, 5, 4, 5.
3. Click “Calculate Residuals”: The tool calculates predicted Y values, residuals for each point, and the sum/average of residuals.
4. Review Result: The output shows predicted Y values, residuals, total sum, average, and a tip to interpret residual patterns for model accuracy.