Least squares modelling (2014)

Class date(s):	29 January 2014 to 13 February 2014
(PDF)	Course slides
Download video: Link (plays in Google Chrome) [119M]

Course notes and slides

• Course textbook (print chapter 4)
• Slides for class

Date	Class number	Video and audio files		Other materials	Reading (PID)	Slides
29 January	04C	Video (119 M)	Audio (18 M)	See the source code below	Chapter 4	Slides for class

Software source code

Take a look at the software tutorial, particularly steps 16 to 22.

Code used in class

Least squares demo

x <- c(10, 8, 13, 9, 11, 14, 6, 4, 12, 7, 5)
y <- c(8.04, 6.95, 7.58, 8.81, 8.33, 9.96, 7.24, 4.26, 10.84, 4.82, 5.68)
plot(x,y)
model.ls <- lm(y ~ x)
summary(model.ls)

coef(model.ls)
confinf(model.ls)

names(model.ls)
model$resisduals
resid(model.ls)

plot(x, y)
abline(model.ls)