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This data set contains the thickness and additional data for 84 metal plates.
data("ss.data.thickness2")
A data frame with 84 observations on the following 5 variables.
a factor with the day (seven days)
a factor with the shift (two shifts)
a numeric vector with the thickness (in)
a factor with the day-shift combination
an integer vector with the number of flaws on the surface of sampled plates
This data set illustrates concepts in the book ``Quality Control with R''.
Cano, E.L. and Moguerza, J.M. and Prieto Corcoba, M. (2015) Quality Control with R. An ISO Standards Approach. Springer.
data(ss.data.thickness2) str(ss.data.thickness2) lattice::dotplot(thickness ~ shift | day, data = ss.data.thickness2, layout = c(7, 1))
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