The appropriate pattern for a residual plot is:
A) an overall parabolic shape.
B) a funnel shape with the tapered end at the lower values.
C) a funnel shape with the tapered end at the higher values.
D) a random scatter centered at zero.

Question

Quizplus · Accepted Answer

A residual plot should exhibit a random scatter around zero, indicating that the model is correctly predicting observations across the range of values. Any noticeable patterns in the residual plot suggest that the assumptions of the model may be violated, which could affect the accuracy of the predictions. A parabolic shape (A) or a funnel shape with the tapered end at either end (B or C) would suggest that the model is systematically under- or over-predicting certain values, respectively.

The Appropriate Pattern for a Residual Plot Is