Intro.R

gregoryowens — Sep 9, 2013, 9:50 AM

a <- 2
b <- -3
sigSq <- 0.5
x <- runif(n)

Error: object 'n' not found

y <- a + b * x + rnorm(n, sd = sqrt(sigSq))

Error: object 'x' not found

n <- 40
(avgX <- mean(x))

Error: object 'x' not found

plot(x, y)

Error: object 'x' not found

abline(a, b, col = "purple")

Error: plot.new has not been called yet

sessionInfo()

R version 2.15.1 (2012-06-22)
Platform: x86_64-apple-darwin9.8.0/x86_64 (64-bit)

locale:
[1] en_CA.UTF-8/en_CA.UTF-8/en_CA.UTF-8/C/en_CA.UTF-8/en_CA.UTF-8

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base     

other attached packages:
[1] knitr_1.1

loaded via a namespace (and not attached):
[1] digest_0.5.2   evaluate_0.4.3 formatR_0.7    plyr_1.8      
[5] stringr_0.6.1  tools_2.15.1