ols_dsrvsp_plot: Deleted Studentized Residual vs Fitted Values Plot
Description
Plot for detecting violation of assumptions about residuals
such as non-linearity, constant variances and outliers. It can also be used to examine model fit.
Usage
ols_dsrvsp_plot(model)
Arguments
model
an object of class lm
Details
Studentized deleted residuals (or externally studentized residuals) is the deleted residual
divided by its estimated standard deviation. Studentized residuals are going to be more effective for
detecting outlying Y observations than standardized residuals. If an observation has an externally
studentized residual that is larger than 2 (in absolute value) we can call it an outlier.