Plasma LDL levels in two groups of quail

Data for Exercise 1.53, 1.77, 1.88, 5.66, and 7.50

Quail

Format

A data frame/tibble with 40 observations on two variables

group

a character variable with values placebo and treatment

level

low-density lipoprotein (LDL) cholestrol level

Source

J. McKean, and T. Vidmar (1994), "A Comparison of Two Rank-Based Methods for the Analysis of Linear Models," The American Statistician, 48, 220-229.

References

Kitchens, L. J. (2003) Basic Statistics and Data Analysis. Pacific Grove, CA: Brooks/Cole, a division of Thomson Learning.

Examples

boxplot(level ~ group, data = Quail, horizontal = TRUE, xlab = "LDL Level",
        col = c("yellow", "lightblue"))