Question 1
In a scatterplot, what does it usually mean when the points follow a curved pattern instead of a straight-line pattern?
Question 2
Which graph would most likely show a departure from linearity?
Question 3
What is the best reason to check a residual plot after fitting a linear regression line?
Question 4
If a scatterplot shows a curved upward pattern, what is the best description of the relationship?
Question 5
Which of the following is most likely to cause a linear regression model to be misleading?
