From the plots of residuals shown below, which assumption appears to be violated?
A) Equal Variance
B) Linearity
C) Normality
D) Independence
E) None; all appear to be satisfied.

Question

From the plots of residuals shown below, which assumption appears to be violated?  
A) Equal Variance 
B) Linearity 
C) Normality 
D) Independence 
E) None; all appear to be satisfied.

Quizplus · Accepted Answer

The residuals in both plots do not appear to be normally distributed, indicating a violation of the normality assumption. The residuals in A and B show fairly consistent variance, and the residuals in A appear to have a linear pattern, indicating that the linearity and equal variance assumptions may be reasonable. It is difficult to determine whether the independence assumption is violated based solely on the plots of residuals.

From the Plots of Residuals Shown Below, Which Assumption Appears