Is a linear model appropriate? Why or why not?
The residual plot shows a clear U-shape. A curved regression model would have been better.
Marissa’s data follows. She has rounded attendance to the nearest hundred people. Make a scatterplot of the data. What kind of model might better represent Marissa’s data? Why?
Fit a quadratic model to the data. What attendance does your model predict for a
F day? Use appropriate precision. , where a is the attendance (in s of people) and t is the high temperature ( F) that day. people, rounded to the nearest people.