uResiduals: Extract Residuals from uRegress objects

In uwIntroStats: Descriptive Statistics, Inference, Regression, and Plotting in an Introductory Statistics Course

Description

Extracts residuals (unstandardized, standardized, studentized, or jackknife) from uRegress objects.

Usage

uResiduals(object, type="", version=FALSE)

Arguments

object	an object of class uRegress, as returned by regress.
type	denotes the type of residuals to return. Default value is "", which returns unstandardized residuals. "standardized", "studentized", and "jackknife" return the expected type of residuals.
version	if TRUE, the version of the function will be returned. No other computations will be performed.

Details

Relies on functionality from the stats package to return residuals from the uRegress object. "studentized" residuals are computed as internally studentized residuals, while "jackknife" computes the externally studentized residuals.

Value

Returns the type of residuals requested.

Author(s)

Scott S. Emerson, M.D., Ph.D., Andrew J. Spieker, Brian D. Williamson

See Also

regress, rstudent, rstandard

Examples

# Load required libraries
library(survival)

# Reading in a dataset
mri <- read.table("http://www.emersonstatistics.com/datasets/mri.txt",header=TRUE)

# Create a uRegress object, regressing ldl on age
ldlReg <- regress("mean", age~ldl, data=mri)

# Get the studentized residuals
uResiduals(ldlReg, "studentized")

# Get the jackknifed residuals
uResiduals(ldlReg, "jackknife")

uwIntroStats documentation built on May 2, 2019, 4:34 a.m.