Description Usage Format Source Examples
An experiment was conducted to evaluate the effectiveness of a treatment for tapeworm in the stomachs of sheep. A random sample of 24 worm-infected lambs of approximately the same age was divided into two groups. Twelve of the lambs were injected with the drug and the remaining twelve were left untreated. After a 6-month period the lambs were slaughtered and the worm counts recorded.
1 | data("WormSheep")
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A data frame with 24 observations on the following 2 variables.
worms
integer worm counts
treated
a factor with levels treated
untreated
from Example 6.3 in Ott, R., and Micheal Longnecker. An introduction to statistical methods and data analysis. Cengage Learning, 2008.
1 |
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