openintro (version 1.7.1)

cancer.in.dogs: Cancer in dogs

Description

A study in 1994 examined 491 dogs that had developed cancer and 945 dogs as a control group to determine whether there is an increased risk of cancer in dogs that are exposed to the herbicide 2,4-dichlorophenoxyacetic acid (2,4-D).

Usage

data("cancer.in.dogs")

Format

A data frame with 1436 observations on the following 2 variables.

order

a factor with levels 2,4-D no 2,4-D

response

a factor with levels cancer no cancer

Examples

# NOT RUN {
data(cancer.in.dogs)
table(cancer.in.dogs)
# }