toyline.R

Mina — Sep 11, 2013, 9:29 PM

a <- 2
b <- -3
n <- 400
sigSq <- 0.5

set.seed(1234)
x <- runif(n)
y <- a + b * x + rnorm(n, sd = sqrt(sigSq))

(avgX <- mean(x))

[1] 0.4969

plot(x, y)
abline(a, b, col = "purple")