Geogebra: Residuals and Linear Regression

This Geogebra: Residuals and Linear Regression interactive also includes:

If the line fits, use it. Using a Geogebra interactive, pupils plot points and try to find the best fit line. They assess the linear fit by analyzing residuals. A radio button allows participants to show the regression line and the plotted residuals.

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CCSS: Adaptable
Instructional Ideas

  • Provide a short lesson on using residuals to assess the fit of a linear function
  • Lead a discussion on ways to find a best-fit line other than eye balling it
Classroom Considerations

  • The class should understand how to eye-ball a best-fit line
Pros

  • Lets users move the line incrementally
  • The user can enter their own points or let the resource randomly generate them
Cons

  • None