Residuals and slopes

When you have added a regression line to a graph, you can also:

• Visualize the residuals from the regression analysis
• Visualize the slopes of the equation at each point
• Generate additional data columns from the residual and slope values

This page will focus on the residuals. See this other article about working with slopes (differentials).

To add these additional features to a regression graph, open the advanced features here:

Then you can select to add Residuals and/or Slopes to the graph. This example has residuals added:

Residuals are the differences between the values on the regression line, and the actual sample values.

Slopes are the slope of the equation line at that X value (i.e. the first differential of the equation).

Clicking the "Create new columns from these values" button allows you to generate a new column in your dataset, with the slope and/or residual values, so these can be inspected and plotted.