Researches on Population Ecology

, Volume 10, Issue 2, pp 210–214 | Cite as

Use of the regression of mean crowding on mean density for estimating sample size and the transformation of data for the analysis of variance

  • Syun’iti Iwao
  • Eizi Kuno
Article

Summary

An approximate method for estimating the sample size in simple random sampling and a systematic way of transformation of sample data are derived by using the parameters α and β of the regression of mean crowding on mean density in the spatial distribution per quadrat of animal populations (Iwao, 1968). If the values of α and β have been known for the species concerned, the sample size needed to attain a desired precision can be estimated by simply knowing the approximate level of mean density of the population to be sampled. Also, an appropriate variance stabilizing transformation of sample data can be obtained by the method given here without restrictions on the distribution pattern of the frequency counts.

Keywords

Sample Unit Approximate Method Simple Random Sampling Animal Population Frequency Count 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Copyright information

© The Society of Population Ecology 1968

Authors and Affiliations

  • Syun’iti Iwao
    • 1
  • Eizi Kuno
    • 1
  1. 1.Entomological Laboratory, College of AgricultureKyoto UniversityKyotoJapan

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