Description Usage Format Source References Examples
The raw data pikeraw
give the lengths of 523 pike (Esox lucius). We
grouped the lengths over 25 intervals to obtain this length-frequency data.
The pike65
data frame has 25 rows and 2 columns.
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This data frame contains the following columns:
the boundaries of grouping intervals.
the frequencies of observation falling into each interval.
Macdonald, P.D.M. and T.J. Pitcher (1979). Age-groups from size-frequency data: a versatile and efficient method of analysing distribution mixtures. Journal of the Fisheries Research Board of Canada 36, 987-1001.
Macdonald, P.D.M. (1987). Analysis of length-frequency distributions. In R.C. Summerfelt and G.E. Hall [editors], Age and Growth of Fish, Iowa State University Press, Ames, Iowa. pp 371-384.
http://www.math.mcmaster.ca/peter/mix/demex/expike.html
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