Description Format Details References Examples
Yellowing of paint for different pigments
A data frame with 9 observations on the following 3 variables.
batch
a factor with levels A
, B
and
C
pigment
a factor with levels A
, B
and
C
deltab
a numeric vector
This experiment was to study the impact of pigments on the quality of a white paint. The measure of interest was delta b (smaller is better). Three batches of paint were use to test each of the three pigments (so there were three measurements for each pigment, one from each batch).
Peter R. Nelson, Marie Coffin and Karen A. F. Copeland (2003), Introductory Statistics for Engineering Experimentation, Elsevier. (Appendix A)
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