The residuals regression calculator determines the difference between observed and predicted values in a linear regression model.

- First, input the list of independent (X) and dependent (Y) variables with a comma or space delimiter. Example: 3, 5,10,15 or 3 5 10 15.
- Press the 'Calculate' button.
- Finally, the tool returns the linear regression equation (with slope and intercept) and R-squared value for the given regression model.
- It also shows the list of residuals associated with each observation.

Residual = Observed Value - Predicted Value