ex1513 {Sleuth2}

Lynx Trappings and Sunspots

Description

Data on the annual numbers of lynx trapped in the Mackenzie River district of northwest Canada from 1821–1934.

Usage

ex1513

Format

A data frame with 114 observations on the following 3 variables.

Year

year

Lynx

number of lynx trapped

Spots

number of sunspots

Source

Ramsey, F.L. and Schafer, D.W. (2002). The Statistical Sleuth: A Course in Methods of Data Analysis (2nd ed), Duxbury.

References

Elston, C. and Nicholson, M. (1942). The Ten Year Cycle in Numbers of the Lynx in Canada, Journal of Animal Ecology 11(2): 215–244.

Examples

str(ex1513)