The data shows the acidity index for 155 lakes in the Northeastern United States (previously analysed as a mixture of gaussian distributions on the log scale by Crawford et al.(1992, 1994)). These 155 observations are the log acidity indices for the lakes.
A data frame with 155 observations on the following variable.
a numeric vector showing the acidity index for 155 lakes in the Northeastern United States
Crawford S.L., DeGroot M.H., Kadane J.B., and Small M.J. (1992), Modeling lake-chemistry distributions: Approximate Bayesian methods for estimating a finite-mixture model, Technometrics, 34, pp 441-450.
Crawford S.L. (1994) An application of the Laplace method to finite mixture distributions, JASA, 89. pp 269-278.
McLachlan G. and Peel D., Finite Mixture Models, Wiley, New York.
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