urchin.growth {UsingR}

Data on growth of sea urchins

Description

Data on growth of sea urchins.

Usage

data(urchin.growth)

Format

A data frame with 250 observations on the following 2 variables.

age

Estimated age of sea urchin

size

Measurement of size

Details

Data is sampled from a data set that accompanies the thesis of P. Grosjean.

Source

Thesis was found at http://www.sciviews.org/_pgrosjean

Examples

data(urchin.growth)
plot(jitter(size) ~ jitter(age), data=urchin.growth)