The dataset values on the y-axis are plotted against the normal scores
-0.97 -0.43 0.00 0.43 0.97.
# Suppose that the nbs-10.txt file is in c:/it223. setwd("c:/it223") df <- read.csv("nbs-10.txt", header=TRUE) w <- df$Thickness qqnorm(w, datax=TRUE)