touchard (version 2.0.1)

Crabs: Crabs Data

Description

Horseshoe crab data in Table 4.3.2 (Agresti, Categ. Data Anal., 3nd edition) by courtesy of Jane Brockmann, Zoology Department, University of Florida.

Usage

data("Crabs")

Format

A data frame with 173 observations on the following 6 variables.

crab

crab id

y

number of satellites

weight

in kg

width

carapace width in cm

color

has values 1-4 with 1=light

spine

spine condition

References

Agresti, A. (2013). Categorical Data Analysis. Wiley, 3d ed.

Brockmann, H. J. (1996), Satellite Male Groups in Horseshoe Crabs, Limulus polyphemus. Ethology, 102: 1-21.

Examples

# NOT RUN {
data(Crabs)
dim(Crabs)
head(Crabs)

# }