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

Data originally from Taguchi, G. and Y.~Wu (1980). {\em Introduction
to Off-Line Quality Engineering}. Nagoya, Japan: Central Japan Quality
Control Association.

Columns are levels of A, B, C, D, E, F, G, H, J, and
the response (strength of weld).