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R. Ashby, M. Rhodes-Roberts (1976)
The use of analysis of variance to examine the variations between samples of marine bacterial populations.The Journal of applied bacteriology, 41 3
L. Tippett (1932)
A Modified Method of Counting ParticlesProceedings of The Royal Society A: Mathematical, Physical and Engineering Sciences, 137
(1982)
Ausgewählte Methoden der Wasseruntersuchung, Bd. II, Biologische, mikrobiologische und toxikologische Methoden
L. Cavalli‐Sforza (1965)
Grundbegriffe der Biometrie
J. Lund, C. Kipling, E. Cren (1958)
The inverted microscope method of estimating algal numbers and the statistical basis of estimations by countingHydrobiologia, 11
Garrett Er, Savage Gm (1955)
Statistical evaluation of the paper-disc plate method for neomycin assay.Antibiotics and Chemotherapy, 5
A. Wardlaw (1985)
Practical Statistics for Experimental Biologists
The Poisson distribution is required for the evaluation of counting results. Its availability can be checked with the dispersion index and graphically with a probability sheet. It is shown by an example that with increasing particle density the deviation from the Poisson distribution increases and how these anomalies become visible in the dispersion index and the per‐cent error of the count. For the calculation of confidence intervals, a simple approximation formula and the asymptotic behaviour with growing random sample size are represented. The phenomena of over‐ and under‐distribution as well as of “contagion” (Neyman distribution) are mentioned, and the high‐speed method of counting according to Tippett and the variance‐analytical evaluation methods are referred to.
Acta hydrochimica et hydrobiologica – Wiley
Published: Jan 1, 1987
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