R: Data on red grouse ticks from Elston et al. 2001
grouseticks
R Documentation
Data on red grouse ticks from Elston et al. 2001
Description
Number of ticks on the heads of red grouse chicks
sampled in the field (grouseticks)
and an aggregated version (grouseticks_agg); see original source for more details
Usage
data(grouseticks)
Format
INDEX
(factor) chick number (observation level)
TICKS
number of ticks sampled
BROOD
(factor) brood number
HEIGHT
height above sea level (meters)
YEAR
year (-1900)
LOCATION
(factor) geographic location code
cHEIGHT
centered height, derived from HEIGHT
meanTICKS
mean number of ticks by brood
varTICKS
variance of number of ticks by brood
Details
grouseticks_agg is just a brood-level
aggregation of the data