Butterfly Species Data

Number of butterfly species seen a given number of times each in two years of trapping. From Table 6.2. This is a frequency data frame.

Format

A data frame with 24 rows and 2 variables:

k

Number of times a species was trapped

count

Number of species seen exactly k times (e.g., 118 species trapped just once, 74 trapped twice each)

Source

https://hastie.su.domains/CASI_files/DATA/butterfly.txt

References

Efron, B. and Hastie, T. (2016). Computer Age Statistical Inference. Cambridge University Press, Table 6.2.