simple.lm: Simplify usage of lm

In jverzani/UsingR: Data Sets, Etc. for the Text "Using R for Introductory Statistics", Second Edition

Description

Simplify usage of lm by avoiding model notation, drawing plot, drawing regression line, drawing confidence intervals.

Usage

simple.lm(x, y, show.residuals=FALSE, show.ci=FALSE, conf.level=0.95,pred=)

Arguments

x	The predictor variable
y	The response variable
show.residuals	set to TRUE to plot residuals
show.ci	set to TRUE to plot confidence intervals
conf.level	if show.ci=TRUE will plot these CI's at this level
pred	values of the x-variable for prediction

Value

returns plots and an instance of lm, as though it were called lm(y ~ x)

Author(s)

John Verzani

See Also

lm

Examples

## on simulated data
x<-1:10
y<-5*x + rnorm(10,0,1)
tmp<-simple.lm(x,y)
summary(tmp)

## predict values
simple.lm(x,y,pred=c(5,6,7))

jverzani/UsingR documentation built on Aug. 3, 2020, 11:57 a.m.