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Confidence Limits Associated with Means and Medians of Series of Net Catches
Author(s) -
Moyle John B.,
Lound Richard
Publication year - 1960
Publication title -
transactions of the american fisheries society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.696
H-Index - 86
eISSN - 1548-8659
pISSN - 0002-8487
DOI - 10.1577/1548-8659(1960)89[53:clawma]2.0.co;2
Subject(s) - statistics , series (stratigraphy) , mathematics , median , ranking (information retrieval) , negative binomial distribution , econometrics , parametric statistics , fish <actinopterygii> , computer science , poisson distribution , biology , artificial intelligence , fishery , paleontology , geometry
Statistical methods for determining errors associated with means and medians of series of catches in stationary nets are discussed and two suggested methods presented: a parametric method based on the negative binomial distribution and a non‐parametric method using sequential ranking of values around the median. It is concluded that the former is most useful from the viewpoint of mathematical description, and the latter is of greatest value where the number of net sets is small and fish of a particular kind are taken in most of the sets.