Plotting the residuals against a binary predictor (X = 0, 1) reveals nothing about heteroscedasticity.

Name: Plotting the residuals against a binary predictor (X = 0, 1) reveals nothing about heteroscedasticity.
Brand: Quizplus
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Question

Quizplus · Accepted Answer

Plotting residuals against a binary predictor can reveal heteroscedasticity if the spread of residuals differs significantly between the two groups (X = 0 and X = 1), indicating that the variance of errors may not be constant across levels of the binary predictor.

Plotting the Residuals Against a Binary Predictor (X = 0