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Alligator Food Choice

Source: R/gators.R
gators.Rd

Agresti (1996, p. 207) gives this data on 59 alligators sampled from a lake in Florida. It has the length of the alligator in meters and the primary food type found in the alligator's stomach. The food type was classified into three categories: "Fish", "Invertebrates", and "Other".

Of interest is whether or not the length of an alligator is associated with the primary food type. Does knowing the length of an alligator give us some indication about its primary food type? If so, how is length associated with the choice of food type?

Usage

data("gators", package = "nestedLogit")

Format

A data frame with 59 rows and 2 columns.

food

Primary food type found in the alligator's stomach, a factor with levels "Other", "Fish", and "Invertebrates".

length

Length of the alligator in meters, a numeric vector.

Source

Agresti, A. (1996). An Introduction to Categorical Data Analysis. Wiley.

References

An example using this from https://data.library.virginia.edu/getting-started-with-multinomial-logit-models/.

See also

nestedLogit.

Examples

data(gators)
table(gators$food)
#> 
#>         Other          Fish Invertebrates 
#>             8            31            20 
with(gators, tapply(length, food, mean))
#>         Other          Fish Invertebrates 
#>      2.422500      2.358387      1.660000