ols_plot_resid_stud: Studentized residual plot

In olsrr: Tools for Building OLS Regression Models

Description

Graph for identifying outliers.

Usage

ols_plot_resid_stud(model, print_plot = TRUE)

Arguments

model	An object of class lm.
print_plot	logical; if TRUE, prints the plot else returns a plot object.

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.

Value

ols_plot_resid_stud returns a list containing the following components:

outliers

a data.frame 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

Deprecated Function

ols_srsd_plot() has been deprecated. Instead use ols_plot_resid_stud().

See Also

[ols_plot_resid_stand()]

Examples

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

olsrr documentation built on Feb. 10, 2020, 5:07 p.m.