possum {openintro}

Possums in Australia and New Guinea

Description

Data representing possums in Australia and New Guinea. This is a copy of the dataset by the same name in the DAAG package, however, the dataset included here includes fewer variables.

Usage

possum

Format

A data frame with 104 observations on the following 8 variables.

site

The site number where the possum was trapped.

pop

Population, either Vic (Victoria) or other (New South Wales or Queensland).

sex

Gender, either m (male) or f (female).

age

Age.

head_l

Head length, in mm.

skull_w

Skull width, in mm.

total_l

Total length, in cm.

tail_l

Tail length, in cm.

Source

Lindenmayer, D. B., Viggers, K. L., Cunningham, R. B., and Donnelly, C. F. 1995. Morphological variation among columns of the mountain brushtail possum, Trichosurus caninus Ogilby (Phalangeridae: Marsupiala). Australian Journal of Zoology 43: 449-458.

Examples

library(ggplot2)

# Skull width vs. head length
ggplot(possum, aes(x = head_l, y = skull_w)) +
  geom_point()

# Total length vs. sex
ggplot(possum, aes(x = total_l, fill = sex)) +
  geom_density(alpha = 0.5)