lizards {SMPracticals} | R Documentation |
Lizard Count Data
Description
These are data on the structural habitat of two species of lizards in Whitehouse, Jamaica. They comprise observed counts for perch height, perch diameter, insolation, and time of day, for both species. The data can be represented as a 2 x 2 x 2 x 3 x 2 contingency table.
Usage
data(lizards)
Format
A data frame with 48 observations on the following 6 variables.
- height
high
indicates perch at height 5 or more feet,low
indicates perch below 5 feet.- diameter
large
indicates perch diameter 2 inches or more,small
indicates perch diameter less than 2 inches.- sun
Is the perch in a
shady
or asunny
location?- time
Time of day when lizard observed:
early
,late
ormidday
.- species
Species of lizard:
grahami
oropalinus
.- y
Number of lizards seen.
Source
Bishop, Y. M. M., Fienberg, S. E. and Holland, P. W. (1975) Discrete Multivariate Analysis. Cambridge, Mass.: MIT Press. Page 164.
Examples
data(lizards)
## maybe str(lizards) ; plot(lizards) ...