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The number of four species of seabirds
data(seabirds)
A data frame with 40 observations on the following 3 variables.
Quadrat
the quadrat; a numeric factor with levels 0 through 10
0
10
Species
the species; a factor with levels M (murre), CA (crested auklet), LA (least auklet) and P (puffin)
M
CA
LA
P
Count
the number of seabirds of the given species in the given quadrat; a numeric vector
The data are counts of four seabird species in ten 0.25 square-km quadrats in the Anadyr Strait (off the Alaskan coast) during summer, 1998.
D. J. Hand, F. Daly, A. D. Lunn, K. J. McConway, and E. Ostrowski (1994) A Handbook of Small Data Sets, London: Chapman and Hall. Dataset 215.
data(seabirds) summary(seabirds)
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