Cigar {BSDA}

Milligrams of tar in 25 cigarettes selected randomly from 4 different brands

Description

Data for Example 10.4

Usage

Cigar

Format

A data frame/tibble with 100 observations on two variables

tar

amount of tar (measured in milligrams)

brand

a factor indicating cigarette brand with levels brandA, brandB, brandC, and brandD

References

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

Examples

boxplot(tar ~ brand, data = Cigar, col = "cyan", ylab = "mg tar")
anova(lm(tar ~ brand, data = Cigar))