| pikeraw {mixdist} | R Documentation |
A Sample of Pike Lengths
Description
The data give the lengths of 523 pike (Esox lucius), sampled in 1965 from Heming Lake, Manitoba, Canada. There are known to be five age-groups in the sample. For each fish, the age group is determined by scale reading.
The pikeraw data frame has 523 rows and 2 columns.
Usage
data(pikeraw)Format
This data frame contains the following columns:
- length
the lengths of 523 pike
- age
the age groups of 523 pike
Source
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.
References
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
Examples
data(pikeraw)