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 III only
B) I and II only
C) I only
D) I, II, and III
E) II only

Question

Quizplus · Accepted Answer

A residuals plot is useful to see if our model is appropriate (I) and if there are patterns in the data that were not obvious in the original scatterplot (II). However, it does not always clearly identify influential points (III). Choice B includes the two most accurate statements.

A Residuals Plot Is Useful Because