\Header{acid}{Determination of Formaldehyde}
\keyword{datasets}{acid}
\begin{Usage}
\begin{verbatim}data(acid)\end{verbatim}
\end{Usage}
\begin{Format}
A data frame with 6 observations on 2 variables.
\Tabular{rlll}{
[,1] & carb& numeric & Carbohydrate (ml) \\{}
[,2] & opt & numeric & Optical Density \\{}
}\end{Format}
\begin{Description}
These data are from a chemical experiment to prepare a
standard curve for the determination of formaldehyde by the addition
of chromatropic acid and concentrated sulpuric acid and the reading
of the resulting purple color on a spectophotometer.\end{Description}
\begin{Source}
Bennett, N. A. and N. L. Franklin (1954).  Statistical analysis in
Chemistry and the Chemical Industry.  New York: Wiley\end{Source}
\begin{References}
McNeil, D. R. (1977).  Interactive Data Analysis.  New York: Wiley.\end{References}

