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Data from the Assay of Viral Contamination experiment in chapter 3 of Design and Analysis of Experiments with R
data(virus)
A data frame with 18 observations on the following 3 variables.
y
a numeric vector
Sample
a factor with levels 1 2 3 4 5 6
1
2
3
4
5
6
Dilution
a factor with levels 3 4 5
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