pikeraw: A Sample of Pike Lengths

In mixdist: Finite Mixture Distribution Models

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)

Example output

mixdist documentation built on May 2, 2019, 3:34 p.m.