ex0127: Environmental Voting of Democrats and Republicans in the U.S. Senate
Description
The data are the number of pro- and anti-environmental votes, according to the League of Conservation Voters, for each member of the U.S. Senate in 2005, 2006, or 2007.source
Ramsey, F.L. and Schafer, D.W. (2013). The Statistical Sleuth: A
Course in Methods of Data Analysis (3rd ed), Cengage Learning.