Worksheets/Week3
Revision as of 20:21, 9 March 2019 by Kevin Dunn (talk | contribs)
Part 1
# Create the design matrix in a quick way in R
A <- c(-1, +1, -1, +1)
B <- c(-1, -1, +1, +1)
y <- c(89, 268, 179, 448)
mod.siderxn <- lm(y ~ A + B + A*B)
summary(mod.siderxn)
library(pid)
contourPlot(mod.siderxn)
interaction.plot(A, B, y)
interaction.plot(B, A, y)