Standardized residual chart — ols_plot_resid_stand • olsrr

Chart for identifying outliers.

Usage

ols_plot_resid_stand(model, threshold = NULL, print_plot = TRUE)

Arguments

model: An object of class lm.
threshold: Threshold for detecting outliers. Default is 2.
print_plot: logical; if TRUE, prints the plot else returns a plot object.

Value

ols_plot_resid_stand returns a list containing the following components:

outliers: a data.frame with observation number and standardized resiudals that exceed threshold

for classifying an observation as an outlier

threshold: threshold for classifying an observation as an outlier

Details

Standardized residual (internally studentized) is the residual divided by estimated standard deviation.

See also

ols_plot_resid_stud()

Examples

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

ols_plot_resid_stand(model, threshold = 3)