Abstract
THE problem of subdivision of a population characterized by a correlation matrix obtained from a set of 2 × 2 contingency tables has recently been the subject of communications by Williams and his colleagues1,2. The basis of Williams's method is to choose that species which, by its presence or absence, subdivides the population of ecological observations in the most efficient manner possible. The purpose of this communication is to question the advisability of placing so much reliance on a single species, no matter how well selected.
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References
Williams, W. T., and Lance, G. N., Nature, 182, 1755 (1958).
Williams, W. T., and Lambert, J. M., J. Ecol., 47, 83 (1959).
Goodall, D. W., Aust. J. Bot., 1, 39 (1953).
Goodall, D. W., Aust. J. Bot., 2, 304 (1954).
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HARBERD, D. Association-Analysis in Plant Communities. Nature 185, 53–54 (1960). https://doi.org/10.1038/185053a0
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DOI: https://doi.org/10.1038/185053a0
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