This dataset example introduces researchers to two-way scatter plots. Two-way scatter plots, often simply called scatter plots, allow researchers to explore graphically the relationship between two continuous variables. This example uses a subset of data from the U.S. Statistical Abstracts, 2012, looking specifically at smoking rates for men and women across the 50 U.S. states plus Washington, DC. Understanding the dispersion of smoking rates across the states is important for evaluating health behavior and possible health policies in the U.S.
In this example, readers are introduced to how to produce and interpret two-way scatter plots. The sample dataset has been cleaned and organized to make this example easier to follow. Interested readers should consult the full documentation for this dataset located at (http://www.census.gov/compendia/statab/).