Residuals

Residuals are more than what is left over. Given an equation of the best fit line and a set of bivariate data, pupils calculate the residuals for each point. The learners create a graph of the residuals and interpret in terms of the fit of the line.

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CCSS: Designed
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Instructional Ideas
  • Have the class create a scatter plot of the data and include the line of best fit and draw in the residuals
Classroom Considerations
  • The class should know how to calculate residuals
  • Individuals need to know how to plot points
Pros
  • Provides examples of misconceptions
  • Describes instructional strategies to use for different levels of understanding
Cons
  • None