n <- 300 u <- runif(n) x <- qnorm(u) y <- rnorm(n) par(mfrow=c(1,2), mar=c(2,2,1,1)) qqplot(u, y, main="uniform vs normal") abline(0, 1, col="gray") qqplot(x, y, main="normal (inversion) vs normal") abline(0, 1, col="gray")