cassie {mixdist}

Cassie's Length-Frequency Example

Description

Data for Cassie's (1954) analysis of size frequency distributions.

The cassie data frame has 40 rows and 2 columns.

Usage

data(cassie)

Format

This data frame contains the following columns:

length

the boundaries of grouping intervals.

freq

the frequencies of observation falling into each interval.

Source

Cassie, R.M. (1954). Some uses of probability paper in the analysis of size frequency distributions. Aust. J. Mar. Freshwater Res. 5 , 513-522.

The data, lengths (in) of 256 snapper (Chrysophrys auratus Forster) taken by a trawl with a mesh of about 1.5 in, are given in Table 5 of that paper. Cassie's results are given in his Table 1.

References

http://www.math.mcmaster.ca/peter/mix/demex/excass.html

Examples

data(cassie)
plot.mixdata(cassie)