pikdat5: Heming Lake Pike Data

In mixdist: Finite Mixture Distribution Models

Description

The raw data pikeraw give the lengths of 523 pike (Esox lucius), and there are known to be five age-groups in the sample. We grouped the lengths over 25 intervals to obtain the grouped data given as separate samples for each age group determined by scale reading.

The pikdat5 data frame has 25 rows and 6 columns.

Usage

data(pikdat5)

Format

This data frame contains the following columns:

length

the boundaries of grouping intervals.

age1

the numbers of observation from each interval belonging to the first age group.

age2

the numbers of observation from each interval belonging to the second age group.

age3

the numbers of observation from each interval belonging to the third age group.

age4

the numbers of observation from each interval belonging to the fourth age group.

age5

the numbers of observation from each interval belonging to the fifth age group.

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(pikdat5)

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