What is the purpose of a residual plot in multiple linear regression?
- All of the above
- To check for independence of errors
- To check for linearity
- To check for normality
A residual plot in multiple linear regression is used to check various assumptions of the model. It can help visualize if the residuals are randomly scattered (checking for independence), whether they have a constant variance (homoscedasticity), and if they exhibit any noticeable patterns (checking for linearity and normality).
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