A data set from Oehlert (2000) \emph{A First Course in Design and
Analysis of Experiments}, New York: W. H. Freeman.

Columns are values of c, s, n, and the scores.
Cost codes are 1, 2, 3 for low, medium, and high.
Sensory codes are 1, 2, 3 for low, medium, and high.
Nutrition codes are 1, 2 for low and high.