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Zur statistischen Auswertung von mikroskopischen Plankton‐ und Partikelzählungen

Zur statistischen Auswertung von mikroskopischen Plankton‐ und Partikelzählungen 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. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Acta hydrochimica et hydrobiologica Wiley

Zur statistischen Auswertung von mikroskopischen Plankton‐ und Partikelzählungen

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References (7)

Publisher
Wiley
Copyright
Copyright © 1987 Wiley Subscription Services, Inc., A Wiley Company
ISSN
0323-4320
eISSN
1521-401X
DOI
10.1002/aheh.19870150506
Publisher site
See Article on Publisher Site

Abstract

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.

Journal

Acta hydrochimica et hydrobiologicaWiley

Published: Jan 1, 1987

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