In this activity, students will investigate a residual plot for a set of data after selecting a regression model. 

This lesson includes modeling a data set using linear and exponential regressions.

• As a result students will:
  • Observe a residual plot as well as a scatter plot of the data.
  • Understand that a residual is the actual value of the data minus the predicted value from the regression equation.
  • Conjecture and draw conclusions about the appropriateness of the model based on the residual plot.
  
  *Note: This activity contains an optional AP Practice Questions document for those students preparing for the AP Precalculus Exam.