Standardized test scores from a random sample of twenty college freshmen.
A data frame with 20 observations on the following variable:
standardized test score
Ugarte, M. D., Militino, A. F., and Arnholt, A. T. (2008) Probability and Statistics with R. Chapman & Hall/CRC.
qqmath(~scores, data = Score, type=c("p", "r"))