Chapter 9 Exercise 4

Log in om je oplossingen te testen.
set.seed(1) x <- rnorm(100) y <- 4 * x^2 + 1 + rnorm(100) class <- sample(100, 50) y[class] <- y[class] + 3 y[-class] <- y[-class] - 3 plot(x[class], y[class], col = "red", xlab = "X", ylab = "Y", ylim = c(-6, 30)) points(x[-class], y[-class], col = "blue") z <- rep(-1, 100) z[class] <- 1 data <- data.frame(x = x, y = y, z = as.factor(z))
Je kunt zo vaak indienen als je wenst. Er wordt enkel rekening gehouden met je laatst ingediende oplossing.
Log in om je oplossingen te testen.