pearson {mixdist}

Karl Pearson's Crab Data

Description

The data give the ratio of "forehead" breadth to body length for 1000 crabs sampled at Naples by Professor W.F.R. Weldon.

The pearson data frame has 29 rows and 2 columns.

Usage

data(pearson)

Format

This data frame contains the following columns:

ratio

the boundaries of grouping intervals.

freq

the frequencies of observation falling into each interval.

Source

Pearson, K. (1894). Contributions to the mathematical theory of evolution. Phil. Trans. Roy. Soc. London A 185, 71-110.

References

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

Examples

data(pearson)
plot.mixdata(pearson)