If the plot of the residuals is fan shaped, which assumption is violated?
A) independence of errors
B) normality
C) homoscedasticity
D) No assumptions are violated; the graph should resemble a fan.

Question

Quizplus · Accepted Answer

A fan shaped plot of residuals indicates that the assumption of homoscedasticity, or equal variances across all levels of the independent variable, is violated. This means that the variability of the residuals increases or decreases as the values of the independent variable increase or decrease, respectively, indicating that the model may not be appropriate for the data.

If the Plot of the Residuals Is Fan Shaped, Which