Knight and Skagen collected during a field study on the foraging behaviour of wintering Bald Eagles in Washington State, USA data concerning 160 attempts by one (pirating) Bald Eagle to steal a chum salmon from another (feeding) Bald Eagle.
eagles data frame has 8 rows and 5 columns.
- Number of successful attempts.
- Total number of attempts.
Size of pirating eagle (
Age of pirating eagle (
Size of victim eagle (
Venables, W. N. and Ripley, B. D. (1999) Modern Applied Statistics with S-PLUS. Third Edition. Springer.
eagles.glm <- glm(cbind(y, n - y) ~ P*A + V, data = eagles, family = binomial) dropterm(eagles.glm) prof <- profile(eagles.glm) plot(prof) pairs(prof)