A residuals plot is useful because
I. it will help us to see whether our model is appropriate.
II. it might show a pattern in the data that was hard to see in the original scatterplot.
III. it will clearly identify influential points.
A) I and II only
B) I only
C) I, II, and III
D) I and III only
E) II only

Question

Quizplus · Accepted Answer

Residuals plots are useful for assessing the appropriateness of a model (I) and for revealing patterns not easily seen in the original scatterplot (II). However, they do not clearly identify influential points (III).

A Residuals Plot Is Useful Because