\name{acid}
\title{Determination of Formaldehyde}
\usage{data(acid)}
\alias{acid}
\format{A data frame with 6 observations on 2 variables.
  \tabular{rlll}{
    [,1] \tab carb \tab numeric \tab Carbohydrate (ml) \cr
    [,2] \tab opt \tab numeric \tab Optical Density \cr
  }
    
}
\source{Bennett, N. A. and N. L. Franklin (1954).  Statistical analysis in
Chemistry and the Chemical Industry.  New York: Wiley

}
\description{These data are from an 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.

}
\references{McNeil, D. R. (1977).  Interactive Data Analysis.  New York: Wiley.

}
\keyword{datasets}
