Studentized residual plot

Graph for identifying outliers.

ols_srsd_plot(model)

Arguments

model	An object of class lm.

Value

ols_srsd_plot returns a list containing the following components:

outliers

a tibble with observation number and studentized residuals that exceed threshold

for classifying an observation as an outlier

threshold

threshold for classifying an observation as an outlier

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 3 (in absolute value) we can call it an outlier.

See also

[ols_srsd_chart()]

Examples

model <- lm(mpg ~ disp + hp + wt, data = mtcars)
ols_srsd_plot(model)