In a good regression model the residual plot shows
A)a cone pattern.
B)an arched pattern.
C)a random pattern.
D)an increasing pattern.
E)a decreasing pattern.

Question

Quizplus · Accepted Answer

In a good regression model, the residual plot should show a random pattern, indicating that the residuals are not systematically biased and the model is capturing the variability in the data well. A cone pattern (A) or an arched pattern (B) may indicate heteroscedasticity or a misspecified regression model. An increasing (D) or decreasing (E) pattern may indicate that the relationship between the dependent variable and the independent variable is not linear and may require a nonlinear model.

In a Good Regression Model the Residual Plot Shows